The Bozeman though is more complex. For 99% of the time it was trapped there was no Enterprise for it to crash into to create the incident, so why was it in a loop?
Only thing I can say about that is perhaps the Bozeman was pulled FORWARD in time for that initial crash and then was looping for the next 17 days...
Or, it's another time deal, the anomaly existing in two different times & the presence of both ships creating an event which loops them back to a set point. For all we know, even the passage of time on the Bozeman could have been different
Short answer, when writing time sci-fi, you can bend all sorts of reality