Why most Japanese عملی حکمت openings and endings are 90 سیکنڈ while English عملی حکمت openings are usually 30 یا 60 seconds? How can companies do that?

Typical عملی حکمت ویژن ٹیلی episodes broadcast on network Japanese ویژن ٹیلی have commercial breaks after the opening animation, in the middle of the episode, and just before the ending credits. With this broadcast pattern, a 90 سیکنڈ opening puts مزید content between commercial breaks than a 30 یا 60 سیکنڈ opening, which may be less annoying for viewers to watch.