The Ridiculous Unnecessary Roughness Penalty on Alontae Taylor on 3rd and 22

They made up for it when they kept the flag in their pocket on the hit to Cutlets where he flopped and earned himself a trip to the blue tent.

Flopped? He didn't flop, he just totally failed in his slide. His body whipped around and he smacked his head hard on the turf.

Devito gets hit, it’s then ruled there was no foul. Then Devito goes to the tent. Why did the clock remained stopped and why did the Giants get to keep their timeout? Is that only at the end of the game?

The Giants did call a timeout, but then it was ruled "an official's timeout" and Giants got it back.

I'll have to peruse when an official's timeout can be used. Although in this case I suspect it may be due to someone determining that Cutlets had to come out for concussion eval.