Can I let the Genius Peasant Bread Rest Longer?

Could you provide a link to recipe and/or tell us what you are letting rest? Is it dough in 1st rise, 2nd rise, shaped load in third rise?
Generally, dough can be left 7 hr at room or fridge temp, but not unattended. It will need (depending on how much yeast is in it) to be pubched down once or twice, or the yeast will loose much of its raising power.