Speaking from a US perspective here, although these basics would likely be true everywhere. Stations have a process when this type of thing happens. There's usu

Speaking from a US perspective here, although these basics would likely be true everywhere. Stations have a process when this type of thing happens. There's usually a range of time when the commercials are "good", and there's often times enough non-commercial content in the breaks that things could be shuffled around and all spots can still be made good during the relevant program. At the very least, I'm sure they'd bump a lesser-paying commercial if it absolutely came down do it, to get paid by a more expensive commercial. In this case, being live, the operator would be firing the break themselves. If they missed the break due to gross negligence, they'll probably lose their job (or at least be reprimanded). But, if the fault happened due to technical malfunction, or if they happened to be dragged away from the console by their supervisor, then they'll just make the spots good and move on.