Originally Posted by NewbieRunner

If you arrive from BCN there's no need to go through security if you follow the "correct" route. To go from your arrival gate (likely to be an A gate) to your departure gate for your TG flight just follow the signs to B. This should take you via an elevator (opposite gate A14) and a tunnel to Pier B. Go through passport control at the end of the tunnel for B20-63 gates.

You should have enough time to enjoy the SEN lounge.