Who gives the signal?

[JugglingReferee]

Originally Posted by JRutledge

First of all the L should have recognized there was another whistle.

Yes, he should have, however:

It's not odd to have both whistles go at the same time, and the L not realizing there was a T whistle due to sound alone. If the T had now lowered his open hand signal, to walk to the L, the L could still be in the dark as to another call.

Originally Posted by JRutledge

The T should have come running in letting it be known they had something different.

Which he did.

Originally Posted by JRutledge

The bottom line is the T called the travel, not the L. So the T should give the signal, but at the very least the T should be saying to their partner, "I see what you have, but the travel was first." Then you get the ball back in play and move on.

It might be a good idea for the T to stick with the play and should still see this after-travel contact. S/he should then confirm with the L that the contact he is calling is the same after-travel contact the T observed. This mechanic prevents cases where the T missed contact that the L saw. Granted, this is not needed in all cases, however.

I have seen calls botched because the T assumed contact that the L called to be same contact that he saw.