Located to the right of the kitchen entrance, all profit from the machine go directly to CRI, and we've got Gatorade, water, Coke and Diet Coke currently on offer.

When I was a Novice rower learning the parts of the stroke, I remember hearing this phrase, "arms, body, legs... legs, body, arms" ad nauseam.   As a Novice coach, explaining the stroke separation to rowers in that over-simplified way often ends up with a mechanical, stiff stroke, which looks painful and is often disconnected.
 
When we talk about "staying connected", it is helpful to begin thinking about the core connecting the arms and the legs, rather than as a separate piece, with all parts connected to the oar.  On the drive, as the legs push away from the foot stretchers, engage your core (I think "suck in your belly button") and hang on your handle, feeling the pull in your lat muscles.  Begin to open your body just as the legs are halfway through the drive.  As the body finishes it's swing, remain strong and tall through your core, and finish off the stroke strong with a clean release.
 
Common problems with lack of connection are "shooting your slide" and opening the body too soon.  Shooting your slide refers to the seat moving towards bow before anything else moves, and not engaging the rest of the body.  Remind yourself: "if my seat moves, the handle moves".   Opening the body too soon is another source of disconnection.  Don't waste the power in your legs.  As soon as the back begins to open, the push from the legs is diminished.  Hang onto the stroke as much as you can, keeping the arms loose until the finish.  Bending the arms too soon takes all the power away, and will tire you out quickly!
 
A great way to make sure that you are staying connected is to set the erg monitor to the "force curve" screen.  Your power application graph should be the shape of a gumdrop - a slope up, flattop, and a slope down.  Not a black diamond ski slope, not moguls, not a roller coaster, and hopefully not a "flat line".  Power should be sustained throughout the drive.  If any part of the curve dips, that is where you have a disconnect.  Try doing a piece with the power curve on the monitor - a steady state piece where you aren't concerned with splits, but with form.  It will most definitely help your speed in the boat when you are back on the water!