If those dried, brown, narrow leaves, to the left of the pod, are part of the vine, then it's not Cynanchum laeve, which has wider, cordate leaves. Probably another cynanchum species. Is there a groove running down one side of the seedpod?

It looks like there may be other types of dead leaves entwined in there also, so they would need further investigation. All Cynanchum species have similar, smooth seed pods, but I think C. laeve has the largest. Yours seems pretty large, but I can't say for sure which species it is. I'll take a look at the dead leaves, on my vine.

The milkweed forum is pretty much dead now. All the serious people went over to facebook. If you showed these pics over at facebook, you'd get the same answer.