I recall I used to do this to my mum as well when I was this age. Kinda also recall driving her crazy too.
You feed the 2 year old a mouthful. And he keeps it there. No movement, no chewing, no swallowing. It’s J U S T T H E R E in his mouth. Take away his entertainment (which is usually a DVD of Bee Movie or Ice Age or some such) and he’d start bawling, mouth agape, effectively showing you the contents or objects in discussion here.
What the hell do we do?? He won’t chew, or (I think more accurately) forgets to chew. Threaten to take away the uneaten portions and he objects verbally and very audibly. Put it back, 5 seconds later, it’s back to forget-to-chew. He’s probably already no longer hungry, else he’d be chowing down the food. But he still has to finish up the food cos, well, it’s prepared, and he just has to finish it!
But wait a second: I think I used to to it to my mum way after 2 years old, else I wouldn’t be able to recall it. Does that mean that Caleb will be doing this for more years to come??