If you're worried there won't be that many connections between the two projects, some words from DC Studios co-chief James Gunn should quell those concerns. Speaking to Entertainment Weekly, Gunn made it clear the connections are there,

James Gunn recently teased plans for a huge cameo "near the end" of Peacemaker season 2, but will it be a familiar face from the wider DCU or a major new addition to the filmmaker's rebooted DC franchise?

James Gunn has teased DC fans that they are getting a “really big” cameo in the forthcoming second season of Peacemaker, the Suicide Squad spin-off starring John Cena.