a thought: Ford finds himself in Jack’s dimension during his travels in the portal. Jack and Ford end up meeting and helping each other out while Jack tries to help Ford get to a rift/portal to travel to another dimension (and help him in his mission to destroy Bill). And during that time they become a big fighting duo and beat up Aku’s bots and bounty hunters.
I feel like they would bond over being wanted men and trying to defeat an evil being that keeps trying to track them down and torment/kill them. Also, they’re both away from home (Jack being in another time and Ford being in another dimension far from his home one).