Alright, thanks for clearing that up, and sorry for the trouble. Really appreciate it!
For some reason, the event menu was showing a repeat interval of 1, even though the calendar correctly followed the bi-weekly schedule I originally set. After manually updating the interval to 2, RRULE is now correct:
RRULE:FREQ=WEEKLY;UNTIL=20360526T000000Z
RRULE:FREQ=WEEKLY;INTERVAL=2;UNTIL=20360531T000000Z
RRULE:FREQ=WEEKLY;UNTIL=20260526T000000Z
RRULE:FREQ=WEEKLY;INTERVAL=2;UNTIL=20360531T000000Z
Thanks!