Stathis Psillos argues for this, following Elizabeth Anscombe. Some but not all cases of causation involve constant conjunction. Some but not all involve temporal priority, contiguity, energy transference, difference making, and so on. None of these features is either necessary or sufficient for causation. So there could be cases of causation where one or more may be lacking, and cases that are not causation but which exhibit one or more of these features. But cases that are causation will be ones that possess enough of these features such that we are able to recognize them as causal.