In my perspective TP
primarily is responsible to find the piece of luggage at their LIS
bag hold area **)
wants to get involved might be due to the fact that it will be them who will fly the bag across the pond once it is found, as unaccompanied bag.
As a bag of "potential risk" it will get treated specially while transferring at LHR
, a transfer which TP
hopefully will be able to arrange among the two of them (not that TP
just flies it to LHR
and it gets stranded there ...).
And I can think of that special note will need to go to US CBP
that bags will arrive unaccompanied.
As a good customer, please do VS
the favour and keep them informed too resp. copy them in in any email correspondance.
I have had the pleasure a few years ago to visit this very bag hold area at LIS
when my bag did not make the transfer at ZRH
inbound to LIS
Without any special reason like prior strike action or weather influence there were hundreds of bags sitting around on carts and stacked into shelfs. I was aware what my suitcase looked like so I could spot it fairly soon (with more paperwork before and after), but I can imagine that it takes quite some time to catalogue all the unaccompanied bags and those bags not getting picked up from the bag carroussell after a flight.
Carpe diem ! Life is too short to waste your time ! Keep in mind, that today is the first day of the rest of your life !