The very first scene of Season 6B showed the climax of the tense biker gang clash, and it's still being talked about far deeper into the season. It has proven to be the moment that sparked off the Survivors vs. Saviours conflict, despite neither side knowing who the others really were. Episode 13 shows one of the Saviours who tried to look for her boyfriend's body, though there wasn't much left due to him being blown up. Later, the biker gang are described as T's group. That incident will have incensed Negan & Co. meaning that when they clash, it's going to be fuelled by revenge.