It’s the automatic transmission (I know).

It only happened once, but I don’t want to brush it aside. I was accelerating from a green light. When the car was shifting from 1st to 2nd, it took a while to actually change. I noticed the revs rise as if I were in neutral. Eventually it chose 2nd gear.

I can’t re-create the problem. Can anyone tell me what might be wrong? I don’t want to take it to a dealership mechanic because they won’t be truthful with me. I don’t want to take it to an indy mechanic because of the same reason. I hope it isn’t impending transmission failure.

(If it helps, I just changed the AT fluid about a month ago with Honda Genuine ATF-DW1. The old fluid wasn’t burnt)