with patience and ease it will break loose. But with to much muscle and no patience, this thing could become a real nightmare.
first use some sort of lub like wd40 or break free. With two wrenchs, hold one on the actual faucet and the other on the hose end. What you want to do is to loosen the hose, but NOT torque or twist the actual spigot.
Do not use heat, do not use a torch, do not use brut strenght. Just add the lub and work it a bit.