Hi FHG. No problem. I'll give my point of view on the issue in my own words without it become tldr.
First off, "confess with your mouth" would have been very contextually different at the time Paul wrote it. Jesus was a criminal. Paul himself had severely persecuted the church and his conversion didn't change that. Confessing Jesus at that time would likely have resulted in being kicked out of the synagogue, which was much more consequential than the idea we have in modern days where it's pretty easy to move from one church to the next. And, more serious than that there would have been a good chance one would be persecuted if not killed for such a confession, much like one might easily be killed today for confessing to be a Christian in a predominantly Muslim country.
Today it's popular to be a Christian. You're likely to be congratulated by dozens (if not hundreds, depending on the size of your church) of cheering people when you confess the name of Jesus, which presents a very different context to what it would have meant to confess Jesus back in the day.
Secondly, Paul is not the savior; Jesus is. I believe Paul's teachings are consistent with what Jesus taught, but when it comes to teaching on what it means to be saved, the standard is Jesus.
This leads to my third point; check out Mt 7:21, Luke 6:46, and Luke 13:25 to see plenty of evidence from Jesus that calling on his name is
not enough. Check out Mk 3:22. Here's an example of a demon confessing that Jesus is the son of God. Obviously, these example show that just speaking a correct formula (i.e. Jesus I believe you are Lord and I ask you into my heart) isn't enough.
This is the same mistake the Pharisees made; they developed an arrogant spirit suggesting that what made them right with God was a specific religious formula. Lk 3:8. Look carefully at this verse; John rebukes the pharisees for claiming rightness with God via genetic lineage, an outward, physical connection which had nothing to do with inner, spiritual traits. Jesus commented on the same issue when he quoted Isaiah; "this people draws near to me with their lips, but their heart is far from me" Mt 15:8. Like the Lord, Lord example from earlier, these people knew how to say the right things, but they did not have a right heart.
They believed they were right with God much like many Christians today believe they are right with God because they say Lord or "confess the name of Jesus".
And finally, because all these verses point to talk being cheap, I would like to suggest that confessing Jesus happens every time we act on his teachings. This is why Jesus talked about being the way; his teachings make up the values of the kingdom of Heaven. If you show love to your neighbor, you are practicing the way of Jesus eve if you do not know the name of Jesus.
Obviously God is no fool, so he will know who has a bad attitude about their good works and who is sincere, but never, ever is there any indication that we should not at least try to obey Jesus, or that people who practice the teachings of Jesus would be punished for doing so because they didn't say "Lord Jesus is my savior". They show by their actions that they are citizens of the kingdom of Heaven when they practice the values of the Kingdom of Heaven.
It makes no sense whatsoever that God will reject people who respond to his spirit (since God is the source of love people can only show love by responding to his spirit) just because they didn't say the proper prayer or use the correct titles/names for God. Remember Moses? When he asked, " who should I say has sent me" God responded by giving him an unpronounceable series of consonants which translates to "I am whatever I want to be".
"They will know you are my disciples by your love for one another". Jn 13:35
"If you follow my teachings, then you will be my disciples and you will know the truth and the truth will set you free" Jn 8:31
"Herein is my Father glorified, that ye bear much fruit; so shall ye be my disciples". Jn 15:8
None of these verses suggest a need to speak the correct name of God, to speak the name of Jesus, or to perform any religious observance to be right with God. The emphasis in all these teachings is the promotion of the Kingdom of Heaven by acting on the values of the Kingdom of Heaven.