I just did my second entry on the DTV today after being out of Thailand for 11 days.
The immigration officer - a very young lady - didn’t ask me any questions. I simply greeted her with Sawasdee krub and she nodded in response.
I handed over my eVisa, passport, and TDAC.
She gave the TDAC a quick glance, then scanned the QR code on my visa paper.
After that, she flipped through my passport to find the previous entry stamp and placed the new one directly below it.
That was it - smooth and straightforward.