(It might be a quirk of how I learned English.) For me, “I hear you” is an acknowledgement of listening, possibly negotiating, and “I see...”—of the other person already thinking they have heard all they need to, possibly a dismissal. Of course, intonation matters too, and maybe it so outweighs the actual words that the above doesn’t matter, but I mostly intake English as written.
(It might be a quirk of how I learned English.) For me, “I hear you” is an acknowledgement of listening, possibly negotiating, and “I see...”—of the other person already thinking they have heard all they need to, possibly a dismissal. Of course, intonation matters too, and maybe it so outweighs the actual words that the above doesn’t matter, but I mostly intake English as written.