[They were just at the cliff as you were just at the side being a third wheel but don't worry they acknowledge you…This is after Hisoka made Illumi made on purpose to alert Killua that they are there]

Illumi: “Isn't that on purpose” He believes it is. Hisoka: “Na totally isn't” Hisoka stated with a smug face.

You were just to the left of them watching…Maybe you can speak up if you chose to

(Ok I'm done like I'm righting this at 2:56AM LIKE WTF)