clearstream
(He, Him)
I guess if an opponent had readied an action to close with you upon some trigger they could perceive, that can occur within your turn. Kind of corner case, certainly.I think counterspelling a counterspell or provoking an OA and using shield are probably the only times I've seen someone need a reaction on their turn but, yes, you're right. Up thread they're talking about getting a polearm opportunity attack on your own turn though, which is I can't even imagine coming up.