Here is a motion from Zappala on behalf of Robert Liscio before the start of the big 1990 Porter/Raucci/etc Pgh Mob trial, motion for discovery. You can see he wrote this motion and signed in on the 2nd page.

Chucky Jr was a consultant on his dads legal team but was not working the case officially.

Chucky Jr did represent his Dad when it came time to try and get him released in 2000.

This is just to show the relationships and interwining lives of the Zappala's and Porter's and Pgh mob family.