I probably didn't explain it well.
We are baptised into Christ's death, which is what saves us, as we die to ourselves, and our body will die, and as we have died with Christ, we will be raised with Him.
Then - the question would be - can a person be saved in the resurrection if they were never baptised? That if they, in this life, were not baptised into Christ's death, can they still, at their own physical death, be raised into life with Christ? This is the example of the thief on the cross - "you will be with me in paradise" - although at the time, Christ had not yet died, yet, he welcomed that man into His death.
Then - following on that - if it would be possible for a person to be saved through belief, without baptism, so that at the death of their body they could be raised in glory - would it be possible at the very last moment? Could a person be transformed in an instant, knowing that with the Lord a day is like a thousand years, and a thousand years are like a day, could a person believe at the very last moment, and be saved?
And more to the point in relation to this topic, is it possible for all people?
This is why I say, I can't answer this with any sense of certainty.