cutting broken tree leaning onto other tree

[NeSurfcaster]

Definitely get above that top, like said above. Cut as much weight off as possible from above till you have just one or two branches holding up the top. Then release the top, easier said then done from the keyboard. Just make sure your ropes are clear or lift/bucket truck is as far away as possible in case of a bad spin or roll.

 

[JovanMira425]

start from the top, free some weight and work your self downwards

 

[EchoRomeoCharlie]

Jeff Jepson's book 'To fell a tree' has this exact scenario layed out in it.

Lets assume 0 degrees is the direction of the top that has fallen into the live tree, so the top is pointing towards 0º and the butt is pointing towards 180º.

His suggestion is to secure a rope to the stem as far up as possible. Then put in your face cut towards 180º, back cut, place wedge(if possible), continue back cut and leave a 15% hinge(you don't want it leaving while you're under it), and then pull the whole system down at 180º from a safe distance. This will dislodge the top and pull the stem down.