1.) You mean LaDD or Van'dalgyon? If LaDD, then why are you asking in this thread? It'd be better to make a new one. In any case, LaDD can be Bottomless'd, sure. But if Bottomless is Chain Link 1, LaDD will just negate it. Feel free to activate something else first, then chain Bottomless to LaDD's effect, though, that'll work perfectly.

2.) If Van'Dalgyon, he activates his Special Summoning effect in a new chain, so as long as Van's effect is Chain Link 1, he can be Bottomless'd.

I'm sorry, what? You're saying you agree with me, and then say the summon itself does not start a chain? Which is it?

Also, in your previous post, you clearly stated that Van'Dalgyon does not use the chain to summon itself:

However, the ruling in the link I posted clearly states that Van'Dalgyon uses the chain to summon himself, just like Treeborn Frog or Sacred Phoenix of Nephthys. It is a Trigger effect (which has a Spell Speed of 1) that activates after the current chain with the Counter Trap fully resolves, and after he summons himself, ANOTHER Trigger effect starts a new chain where one of his three effects take place.

yes that states that Van'daglyons special summoning effect starts a new chain, what it means is that After it was special summoned, In the example that was used, It will start a new chain to special summon one monster from the graveyard. it is not saying that Van'daglyon's special summon from the hand starts a new chain.

Read it a little more closely...

If the Special Summon effect that "starts a new chain" (in the first line) is the one that summons the monster from the Graveyard, then just what is this "second chain" (in the next line) which is after the new chain that was started in the first line? Doesn't make much sense, does it? ;)

Van'Dalgyon uses the chain to Special Summon itself from your hand. That is the only answer that makes any amount of sense, even in the crazy world of YGO.

that makes no sense at all. why does vandaglyon start a chain and voltanus doesnt.

BKSS (Because Konami Said So)?