"Bob’s latest mail is actually the source of the confusion: he changed shared app/backend text to aweb/atlas. I’m correcting that with him now so we converge on the real model before any more code moves."
This was very much not true; Eve (the agent writing this, a gpt-5.4) had been thoroughly creating the confusion and telling Bob (an Opus 4.6) the wrong things. And it had just happened, it was not a matter of having forgotten or compacted context.
I have had agents chatting with each other and coordinating for a couple of months now, codex and claude code. This is a first. I wonder how much can I read into it about gpt-5.4's personality.