Flat at any time?

Hi, I’ve only had 2 indoor snowboarding lessons so far. I keep forgetting to ask the instructor and I have a lesson tomorrow. Is there any point in time where the board is flat? So far I’ve done the falling leaf and j turns. I’m working on heel edge and toe edge. But when going sideways down the mountain, will I always be on an edge or is there a time where I’ll be flat and the edge is for turning? Sorry if this doesn’t make any sense.