Nissan Altima S 2.5 2015 -- CEL Light; 65,700 miles and AutoZone scan says "Replace Transmission"

Every few weeks, have an issue when stopped at a light, or sometimes when driving over 50 mph (only once this happened) --- push on pedal and no acceleration or movement, and then 2 or 3 seconds later the car moves.

When I restart the engine, it goes away. I just had a full synth oil change and filled up in gas, and now I have a "malfunction" code on dash. Took it to AutoZone for scan, it says "REPLACE TRANSMISSION" code error.

I believe Nissan Altima 2015 S 2.5 had its transmission CTV warranty extended from 60,000 to 120,000 miles? So if I take it and drop it off there, they will scan for the same transmission code and then replace my transmission for free?

I worry they'll say it's for something else and then charge for for the diagnostic and then not fix the problem as this extended CTV warranty offer apparently ends in Jan 2023?

Is this a regular thing? Does my issue sound familiar?