I'm not making a distinction between length or numbers of scenes. Stories emerge from characters interacting with a situation. That situation may be "three goblins hide in a bush in order to ambush the PCs" or it might be "the Queen has been corrupted by Tiamat and will bring about the dracopoclypse."
Chances are the latter situation will require a lot more scenes to resolve than the former. But when the last die has rolled, a story will have emerged for each.
Chances are the latter situation will require a lot more scenes to resolve than the former. But when the last die has rolled, a story will have emerged for each.