I am analyzing a complex made with Alphafold with 7 protein subunits and am trying to find all the interchain contacts. 

The zone command is useful

select zone #1/A 3.6 #1 residues true,

but how can I make it find all interchain contacts at once, rather than one chain at a time? 

What is a command to display sidechains of all residues in the zone?

I really like the PAE plot that ChimeraX makes from alphafold predictions. Could I make a similar plot of the contact residues made with the zone command?