wrote

I was just cutting down large pine tree in yard and it fell into my
beautiful Oak tree and broke branch....It is maybe 90% broke. can I put
splint of some kind? Any advise appreciated.


What size tree and what size branch? With a relatively young tree it will
likely put out a couple of new branches at that spot. With a large tree the
branch will probably be much too heavy so will be difficult to support until
it heals... regardless, if the tree is otherwise healthy why look for
trouble by making a place for disease to start... I'd carefully remove the
branch.