I understand you can open the second trade, but that was not the question. It can be done in sim on the futures platform I use, however not when live trading because the way my brokers back end accounting deals with it, creates a loss on the first part, equal to whatever gap between the 2 positions.
Cheers, M
AFAIK the 2 positions are standalone and of course the balance at the end would be the gap between the 2. That's what I use in my strategy to know exactly how much I will lose/gain. In the 2nd scenario I have a loss of 2.5 points+2spread on the 1st position and a gain of 12.5-2spread on the 2nd. Balance +6 points in case the break doesn't work.