The second orb may be related to other events in the main story. I would progress through the main story (like visiting the time machine).
the dwarf tells there is nothing more to do with the time machine for now.
can it be related to nel or captain ceres? it seemed and out of character to throw galiene under the bus by losing on purpose and to tell Nel Celica's body is also hers but i'll do both if it means proceeding with the main story