Bussing is where you try pointing the blame or purposely disagreeing or VTLing each other to try to cause people to think y'all are on different teams when both are scum.
Even with that as a possibility, it leaves us with two very likely conditions out of three that are feasible.
Option A - Both are scum and are attempting to pull off a buss early in the match.
Option B - One of them is scum, and is attempting to remove a skilled player that they view as a concerning and unknown factor.
Option C - Neither of them are scum, and are pursuing aggressive and sporadic accusations.
Reasoning...
Option A - If they are bussing, they are doing a very good job at it. What I find interesting about this theory is that Aporia went from a very strong and vindicated accusation of Budda to essentially confirming him as a member of the town. As far as I could see, most of the argument between them concerned their varying strategic approaches to the game rather than the validity of the accusation Aporia leveled itself. I would rate this as the second most likely option.
Option B - If only one of them is scum, then I would point the finger at Aporia. I don't think (From my understanding) that it would be a wise tactic as a member of the town to instigate spotty speculation on who is scum and who is not. At the very least, pick someone and prosecute their case to the fullest extent you can, rather than abort and choose a new target. Eventually you may lead another town member to being lynched. I would rate this as the first most likely option.
Option C - This is the least likely option as far as I am concerned. I think at least one of them is scum. This option would entail both being town members while doing some things that I do not necessarily read as townsfolk. Then again, I may be wrong, and in that case I would vote to lynch myself.
Recap...
Option A - 2nd most likely
Option B - 1st most likely
Option C - Least most likely