Comment by joe_the_user

It seems logical since if one used chats in train, one would expect that there would be a delay before their use to get them the form appropriate for batch learning.

The only way the chat could have been used would be for Open AI to baldly violate their policies.

That said, sometimes it take very little information to point someone in a given direction, "I'm working on Navier-Stokes" said by someone with a given specialization might itself be very useful information.