bottomless trap hole and darkworld

well this happened in my test duel and me and firestorm were neither sure how this works

the situation is this

he has bottomless trap hole

i discard 1 gold and 1 sillva and their effects summon them(they are discarded with 1 card. for example card dest)

he activates bottomless does it remove both or only 1 of them?

i think it doesnt cause the summoning effects chain and are not simultaneous but i might be wrong

If you discard multiple "Dark World" monsters simultaneously, such as discarding "Goldd, Wu-Lord of Dark World" and "Sillva, Warlord of Dark World" with "Graceful Charity", you can choose the order in which the effects activate.

yeah so they arent summoned at the same time so bottomless destroys only one.

Correct, So You Choose Which One Is Summoned First.

ok thanks wanted to make sure

Locked.