Yeah, I've seen that film, I'd say it's a factional portrayal of John and Paul's meeting - not quite fact but not all fiction!
Aparently John and Paul did very nearly take a trip to the Saturday Night Live studios after someone said come come down if they were watching! I'm not sure if I read that somewhere... or maybe dreamed it up!
I think their wounds had pretty much healed by the time of John's death, but I don't think they were in regular contact.
Not a bad film though.