Mh, so essentially, TTI and TB are completely separate phenomenons that do not influence each other right?
In that case, if a solo time traveler was to meet his former (already) time traveling self, within a group of companions, is the whole lot made time bastards by the encounter, or by whatever altered the past to make the encounter occur? (Since from the point of view of the solo time traveler, the other travelers did not meet his future self)
...okay, I think I'm starting to figure it out, thanks ^_^