Come to think of it, they might know each others' identities quite well.
They seem to know each other, but only they can confirm it. I read some of TMAN's post history, it seems true that they know each other.
https://ninjastic.space/search?author=TMAN&content=Lauda. Some of TMAN's post about lauda made me laugh.

If someone leaves quietly and doesn't owe anyone, why would we need to know anything about them or the circumstances of their departure.
These two don't owe anyone anything, maybe that's true but both are worth remembering on the forum. Afaik, maybe people are still thinking about it because TMAN and Lauda are two good contributors to the forum and it make some of us very curious about what, why and how thing are out there.