But isn't it a rule in SCRUM that no new cards can be introduced in the middle of a sprint? And isn't it also a rule two co-dependent cards cannot be done in th

But isn't it a rule in SCRUM that no new cards can be introduced in the middle of a sprint? And isn't it also a rule two co-dependent cards cannot be done in the same sprint? (i.e. if card B depends on card A being finished).