Actually those holes in the back of the case only go to the speaker and do not provide any cooling unless you remove the speaker and panel from behind them - which makes setting up the cam on a new Wifi near impossible since you will never hear the audio prompts.
But yes, there have been many reports of sense bridges getting very hot and dropping offline.
You can move the bridge away from the cam with a USB extension cable.
You can also power the sense bridge independently of the V2 cam and move the bridge away from the cam at the same time.
