Zeke won't be challenging for the title anytime soon, they're protecting Bryan right now, if Zeke squashes Bryan, it will do no good to Bryan because he's being booked as a strong fighting champion right now. And also he's a face, they don't do face vs face feud often. Zeke still needs few more victories against credible guys, not jobbers, so he can finally be established as a destructive monster, i can see him feuding with Nexus guys in near future, it would be a perfect opportunity for him to be considered by the fans as a dominant force, kinda like how Big Show is being booked right now.
I'm still hoping next week Ted DiBiase will cost Bryan's KOTR match and then they will set up a US title match at TLC where DiBiase will win the title, because if Ted loses to Bryan again, there will be no reason to continue the feud and Bryan will not have any credible challenger anymore, which won't be good for his reign.