Strange...

Brian had no cable on his guitar while some other guy did.. what's that?

Brian is using a wireless connection these days, he has a radio transmitter on the back of his guitar strap, I guess (the other guy) Jamie uses a cable

Either that or Brian has been miming!

he´s miming !!!

no, Togg is right; wireless

yeah that's what i thought too but i just wanted to be sure :)