The holy knights can hide their presence but that doesn’t extend to everyone else. Why isn’t anyone sensing all this fighting… and especially why isn’t Sanji sensing all these crying females?
We’ve already seen Luffy and Zoro manage to sense Loki from one level of Elbaf to another but Sanji hasnt sensed any of the women yet
Technically, between Robin and Nami and Ronja, only Robin and Ronja have been in danger, and only in the 30 seconds since Sommers started his countdown.
Nami is unharmed, just bound, and Robin was hiding in Saul's beard up until Sommers' started his countdown.
So, Luffy and Sanji are discussing what to do, and will be here very soon, right when Ronja falls.
Ronja falling, and the Giant kids crying over it, only to find out Luffy or Sanji saved her, will be a good moment to make the Giant School Children who hated Luffy come to love him (ie, it's for more Nika worship).
I think Sanji will catch Ronja, and Luffy will then throw Loki up to the Sun World, by grabbing onto the edge of a Branch, then grabbing Loki and slingshotting up with him.
Loki will ask Luffy to free him to help the children/fight the God's Knights.