What recourse? You got your bag. Go unpack.

But, for the benefit of others, it is solely the responsibility of the last delivering carrier to deliver your bag. If it is lost or damaged, it is that last delivering carrier which will pay up.

In this case, the last delivering carrier was AV. OP's report was to AV and it was AV's responsibility to get the bag to OP.

But, DL had the bag and gave it to OP, so there is nothing left to do.