This may be out of universe interpretation but it feels like too much of a coincidence that R2 ends up in Luke’s hands carrying a message by no other than her sister. Too many coincidences in a very very big galaxy.
It has been well established (in the Phantom Menace) that Jedi do believe in greater schemes and the force itself as an entity capable of affecting “destiny” sort to speak.
Of course Luke is oblivious to the whole thing but is there any indication (in any novelisation or other canon work) as to whether Obi-wan sensed things had been set in motion by the powers that be (be it the force itself or whatever)?
Note: I’d prefer canon answers (of any grade) rather than opinions although I’m fine with canon based reasonings even if it’s not a direct quote.