Best to have your D ask the coach what their next steps are and the timeline. I would think many coaches want to have recruiting wrapped up before the fall semester, but it doesn’t always work out that way.
Many XC/Track coaches, even D1, have little to no money for official visits. Again, your D might ask the coach. Obviously XC is in season in the Fall, so visits may be difficult, especially since school gets in the way 
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OVs can happen all of junior year now, a change made a few years ago…so yes, the process is speeding up. I expect some XC/Track coaches offer OVs in the summer (football does for sure) but I’ve not personally seen that…@politeperson? It is best to see campuses when school is in session, but of course that’s not always possible for everyone, especially XC/Track athletes who basically are in season all school year.