Jim Garrison and the Warren Commission are totally unrelated.
Yes, Garrison discredits the Commission findings and there’s this:
Cruz was in New Orleans during 1963, the year that N.O. District Attorney Jim Garrison declared N.O. was the focal point for the plot to assassinate JFK.
The assassination plot involved several Cuban exiles. Accused assassin, Oswald, claimed as part of his “fake defector” persona developed by the CIA, to be a member of the Fair Play for Cuba (Pro-Castro). The FPfC committee just happened to share an office address with Guy Banister’s private investigation agency.
Banister Associates was located on the ground floor of the Newman Building -Lafayette Street while Oswald’s “pro-Castro” Fair Play for Cuba was located around the corner but on the ground floor of the same building. Guy Banister was a retired FBI agent who continued to carry out tasks for the bureau and the CIA. The Newman Building housed a number of anti-Castro groups, including the Cuban Revolutionary Council, Crusade to Free Cuba Committee, the Cuban Democratic Revolutionary Front, Anti-Communist League of the Caribbean, and Friends of Democratic Cuba. Cruz was active with anti-Castro movements and the chances that he did not cross paths with Banister and the other anti-Castro activists is highly unlikely.
While living in N.O. with his wife, Garza, Cruz claimed residency at two addresses, one a low-rent apartment building off of Jackson Avenue. Cruz worked for an oil company in N.O. and has a blurry memory about his time line there including his move from Dallas.