I think (hope) you missed something. Unless someone has read (and can show me) something that T11 said differently, I believe it works like this:
By training, you earn your team the four bonuses for the day. Mine are always at 10%, except for when they drop to 8% and I have to work to get them back up, hopefully, before the next match.
That means, every match your team plays that day, it will have these bonuses. Whether you watch or not and whether you press the button or not while watching.
Then, as an added incentive to watch live, you get to BOOST any one bonus for about 25 minutes of game time by 50%. So your attack bonus, say, goes to 15%, while the rest stay at 10%.