Effects cannot be activated in the middle of the resolution of a chain. For example, you can't activate MST if you draw it with Allure of Darkness before removing a DARK monster, or you can't activate bottomless on a Stardust Dragon when it's summoned through Starlight Road's effect since a chain is resolving already.
The answer is you can't.
Upon confirmation that you understood it I'll lock the topic ;)
Thanks ;)
Locked~
~sin