If there’s been a pause of several hours, people consider it a new conversation. “Good morning” implies that the speaker assumes other participants have slept overnight.

Oh I see, even if chats are organised by person, the conversation has ended (even if improperly) if X time has passed. So people organise mentally the conversations as individual interactions, it is the social component that overrides the digital organisation.

Thank you.

You sound like a robot pretending to be a human lol

Sadly, I get that a lot. Even as a child. Now I’m approaching 40 and we’ll, that never changed.

It's okay, that grammar error put you back in the "human" camp. For now.