Totally agree that seeing and sharing code is essential. The issue of transferring control is very useful, but separate from the chat itself. Independently of

Totally agree that seeing and sharing code is essential. The issue of transferring control is very useful, but separate from the chat itself. Independently of how the code is collaboratively changed, the chat should be persistent and pinned to the code itself on the spot where it matters. Then anybody in the team gets to see the conversations at will and knows both what changed and why.