Originally Posted by ckpeter

LX should be covered by both ANA/NH and AC. Are you looking at connecting flights?

For non-stop flights, everything should be visible by ANA. For connecting flights, sometimes ANA or AC will miss some connection possibilities. Try doing a segment-by-segment search to see if you can see it.

I know that EF seems to have some different ways of constructing routes (perhaps someone from EF can chime in), so that may explain why EF shows route that is not shown by ANX.