jet is notoriously bad at this....7-8 times a year i fly del-nyc/bos/iad-del on a dl ticket, connecting either at ams or cdg....over the last couple of years the last leg of the journey (ams-del) has often been operated by jet....there have been 3 occasions where my baggage has not arrived on the flight with me & jet has never paid me any compensation....they make excuses like its delta's responsibility since the ticket was bought through them or i don't deserve any compensation since del is my home destination or since 1 of my 2 bags has arrived on the flight with me therefore i am not entitled to any compensation....
the first 2 times i let it go since i was home & baring the inconvenience of not having my things with me when i arrived, i didn't lose out on anything by getting my luggage 24 hours later....but the 3rd time i genuinely had a problem....i was supposed to take a connecting flight to bom on a separate ticket a few hours later & my court attire was in my bag that did not arrive....i did not have enough time to go home & get my spare coat, gown, etc as i would have missed my flight....i showed them a copy of my onward ticket & told them that i would have to purchase the items that were in my bag....they told me i was not entitled to compensation since one of my bags had arrived & since my journey ended in del which was my home destination....
i had to eventually spend inr 10k to buy the missing items so that i could appear in court later that morning but jet did not reimburse me for that....since then i have just stopped taking any flight operated by jet, even if it costs me more or if i have a longer layover in ams....