Check if there are any requests which are not finalised, i.e for
        which there are not enough PROPAGATEs

def nonFinalisedReqs(self, reqKeys: List[Tuple[str, int]]):
        """
        Check if there are any requests which are not finalised, i.e for
        which there are not enough PROPAGATEs
        """
        return {key for key in reqKeys if not self.requests.is_finalised(key)}