I know absolutely nothing about BFO, but I would guess the clover will not come up in the oats, as the oats will restrict sunlight and smother out the clover, the time to plant the clover in the oats would be in the spring, late winter, Feb. March kind of frame. I would do one or the other but not both, I am just expressing logic here, like I say I know nothing about BFO. Check with someone else also...