double episodes

What should I understand from ‘double episodes’ in the TV trailers?

“Catch the double episodes of Big Bang Theory” for example.

What does it mean?

A) It means two back to back episodes.
B) It means two or more double episodes. (I mean 4 or more episodes)

Many thanks

For this to be grammatically correct, it would have to mean option B or at perhaps multiple hour-long episodes. But I don’t think the people who write the promos are that concerned with grammar, so I bet it probably means option A.

Many thanks Luschen. I think that is what they mean too. Best regards