Phylon Tractor Beams state that when you activate, you may exhaust this card to enable its effect.
Interdictor states then when a ship activates, it may exhaust interdictor to ready one other upgrade attached to this ship.
Since both occur when you activate a ship, the timing is left to the player. But could that player exhaust phylons, exhaust interdictor to ready phylons again, and then exhaust phylons a second time in that activation, or is it precluded from doing so by some nuance I'm overlooking?
Help me Drasgnighta-wan Kenobi.