I never feed cooked bones, no matter if they are whole or crushed, even a tiny splinter of bone can pierce their stomach, intestines or bowel.

I do feed raw chicken bones but only supervised and only ever necks which I check to make sure they are not to big and can't be swallowed without crunching first.
If a smaller dog swallowed a whole chicken neck without crunching it it could get lodged in their throat if it's too big.