An overcooked bread isn't well cooked. So a well cooked bread is necessarily not too cooked. And yet, asking for "well cooked" or "not too cooked" bread in a bakery have well distinct meanings...

https://sh.itjust.works/post/2006842

An overcooked bread isn't well cooked. So a well cooked bread is necessarily not too cooked. And yet, asking for "well cooked" or "not too cooked" bread in a bakery have well distinct meanings... - sh.itjust.works

Op being French is the only kind of context that could make this post make sense.