SEATTLE (AP) — Chip Kelly and Pete Carroll overlapped for only one season as college coaches in the Pac-10. They've met only once since both found their way to the NFL.

If all goes to plan in both Seattle and San Francisco, the pair will get quite familiar over the next few seasons, beginning Sunday when the Seahawks host the 49ers. While the relationship between Carroll and former San Francisco coach Jim Harbaugh was more contentious, his dealings with Kelly have been mostly congenial.

When Kelly was the coach at Oregon, one of the first places he visited to see how other teams run in-season practices was Seattle.

Kelly recalled this week also visiting then-49ers coach Jim Harbaugh and taking a trip to Air Force, but the Seahawks were his first stop.