Expecting, yes. Watching your every move in real-time, in 1972, no.
Remember, this was in the early days of television - not the continuous video/metadata surveillance state we have now, with commensurate capabilities available to any idiot with a motive and few hundred bucks. Sure, the police assumed the terrorists were expecting a raid somewhere between right now & hours/days from now and involving a lot of heavily-armored police with lots of firepower, but wouldn't know which second and the exact arrangement & capabilities of forces involved. Even seeing all the TV cameras around, the police hadn't learned to make the instant & automatic connection between a video crew and the TV set on in the hotel room about to get raided. This was the first time the targets of a raid were able to see that there were, in fact, right now, 12 cops standing just feet from the windows, and 5 approaching the front door carrying machine-guns and about to bash in the door with a battering-ram in 7...6...5...4...
Remember, this was in the early days of television - not the continuous video/metadata surveillance state we have now, with commensurate capabilities available to any idiot with a motive and few hundred bucks. Sure, the police assumed the terrorists were expecting a raid somewhere between right now & hours/days from now and involving a lot of heavily-armored police with lots of firepower, but wouldn't know which second and the exact arrangement & capabilities of forces involved. Even seeing all the TV cameras around, the police hadn't learned to make the instant & automatic connection between a video crew and the TV set on in the hotel room about to get raided. This was the first time the targets of a raid were able to see that there were, in fact, right now, 12 cops standing just feet from the windows, and 5 approaching the front door carrying machine-guns and about to bash in the door with a battering-ram in 7...6...5...4...