I guess the slot (just in front of the "diffuser" is the ride height referencing system's window. Used to be in the bat wing (or thereabouts) but I guess there's no room anymore.
That is one complicated-looking aero package...
I thought the same about drag in terms of the sheer volume of bodywork around bargeboard (which I think still speaks to a significant PU advantage when compared to relative sparseness of Ferrari and Red Bull).
Those vortices will form easily and due to the aggressive curve they will remain "alive" even in big yaw or turbulent air. As you have compression in front of the floor, all the turbulence will be compressed as well a bit before it reaches them... That is, of course, under assumption that any significant turbulence reaches that area with all those barge board elements in front of it...
Here's what Bottas thinks:
Asked by Motorsport.com if the team was braced for a tougher time in Monaco because of its long wheelbase, Bottas said: “No, I think here we have shown strong performance in the last sector [in Spain].
“That is all about slow speed corners and corner sequences, which is all about Monaco, so I think we have all the chances to be very strong there.
Didn't one of the teams have a Monaco specific front suspension geometry that moved the front wheels back to effectively give a one off shortened wheelbase?