I had a broken collarbone as a kid, and it didn't take that long to heal. Same with ribs: they move all the time and it's essentially impossible to completely stabilize them, and movement across the fracture makes bones heal. Be careful with it for about 3 weeks, then start back light. You should be able to do prowler stuff in 10 days or so if you're careful. And God knows what silly shit the PTs will have you do.