Can both US Senators from a state be elected at the same time?

Question

I understand the US constitution mandates three rolling 'classes' of nearly equal numbers of Senators be elected every two years, each for 6 year terms. The convention has been to not elect both Senators from a state in the same 'class' ie always at the same time. Could a state decide to elect them in the same class though? As a follow up, could a state elect both Senators not just on the same ballot but in the same race. Electing the two candidates with the highest votes.

Answer 1

No! The elections are stagnated