Booked:
one-way AC business SYD-YVR 75000 points + 54.92 euro + 20 b/f
one-way UA economy RDM-SFO-SYD 50,000 points + 39.91 euro + 20 b/f
Was unable to combine an economy connection (where business unavailable) with the business redemption. Also unable to use a 2-connection trip when a 1-connection trip was unavailable. (Both, I think, as expected).