Complex sentence: There were a total of 260 one-hour "Pinwheel" episodes recorded, however, Pinwheel was typically broadcast in 3 to 5 hour long blocks with multiple one-hour episodes shown back-to-back.
Split into simpler sentences: There were a total of 260 one-hour "Pinwheel" episodes recorded. However, Pinwheel was typically broadcast in 3 to 5 hour long blocks with multiple one-hour episodes shown back-to-back.