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...
It has always been the Bozeman entering the anomaly and on the other side, 70 years later, crashing into the Enterprise. And then both ships where trapped in several loops for 17 days.
Think about it, there can't be a scenario where the Bozeman doesn't crash into the Enterprise. Because then the Bozeman would simply leave the anomaly and there wouldn't be an explosion causing a loop.