Yes - the flight numbers are the same. I checked in 2 bags and they have consecutive numbers (EK123455 and EK123456). Bag number EK123455 arrived on the luggage belt at MAN, but EK123456 didn't show up. MAN has twice now delivered the 'missing' bag EK123456 but the bag they keep delivering isn't mine (it's red - mine is black and bigger!). But the red bag has got a secure Emirates sticker round the handle (as put on at check in) which hasn't been tampered with and which bears the number EK123456.
This explains why MAN keep thinking its mine, but it obviously isn't. And I've got the receipt for the missing bag as provided to me at check-in which is EK123456.
Odd one this one - but dangerous if bags with the same number have to be off-loaded or otherwise tracked.