> The connections to Bing, MSN and Akamai can be explained by Windows Update and by built-in apps that may update a news feed.
The experiment seems to be predicated on, "If I turn off all the OS telemetry, what still tries to connect." And as you pointed out, we can't be sure that Windows Update was turned off either.
This experiment does make two good points:
A) Turning off OS telemetry doesn't stop all the telemetry from a default windows install, and
B) the remaining telemetry is neither announced nor organized. Tracking it down is, as you yourself pointed out, the basis for another study.
Myself, I'd put money down on the latest generation of "Windows Genuine Advantage" being part of the traffic. And just in my Tinfoil Hat role, I'd point out that the UK IP near the top makes the telemetry something that the NSA could (if it wanted to) put their fingers into.