If you get a Space FP at 8:05am, then it's possible for the Return Time to be 8:50am to 9:50am.
I think that you can get another FP
for the same ride at the start of the Return Time -- in this example, 8:50am.
Are you saying that if the Return Time for Space is 9:30am to 10:30am, then you can get another Space FP at 9:30am? (If your answer is "yes," then I agree.)
If the Return Time is 9:30am to 10:30am, why would someone try to get another FP at 8:50am? You lost me there.
Here's another example:
Are you saying that if someone gets a Space FP in the mid-morning, and the Return Time is 4:00pm to 5:00pm, then in theory the next time that person could get another Space FP (using the same ticket) would be at 4:00pm? (If your answer is "yes," then I agree.)