It was a commercial station? Well, that's still an issue. In the UK, commercial stations are limited to about 7 minutes of ads per hour. Meanwhile, in the US, we get about 18 minutes of ads. So, in general, each show would have to lose about 11 minutes to fit into the one-hour slot, right? The original episodes might not be able to survive that without rewrites and reshooting anyway.
Yup. Like I said, it's all about scheduling. We don't really do the "one hours slots" thing I get the impression you guys tend to do, either. A show might be scheduled at 8.25pm one week, 8.35pm the next week, 8.10pm the week after, and show lengths can vary from week to week (though not typically enormously so).