Originally Posted by
jrl767
since OP is originating GVA on BA, it's up to BA to decide whether to accept the bags for interlining (but I suspect the outcome will be the same, "sorry we cannot check the bag(s) thru to LAX")
what if any provisions does BA have for day-of-flight changes or standby for earlier flights?
The OP was asking if the bags could be dropped with DL in GVA. Trying with BA is, I agree, a better idea, but as others have noted, the outcome will be the same.