[throw1234651234]

You would have to identify the star that Oumua is going to for that theory to work. Seems like it should be pretty easy to know if it's going to the nearest star (or coming from one), and it's not originated from or going to Alpha Centauri.

The next question is whether or not there is some other logical path that defines logical gravity assists to visit as many stars as possible - nothing like that has been put forward either.

Afaik, it's coming from so far away that we have no idea what star it previously visited.

[Damorian]

I don't think it's safe to assume it would come from/go to the nearest stars to us, as the flight path might need extreme changes that aren't in the fuel budget, especially given its already very high speed.

[incompatible]

Very high speed compared to Solar System objects perhaps, but I expect it would still take an enormous amount of time to reach another star.