Amazon fake confirmation teamviewer scam

The original scam email included the number 844-903-2877
Midway through the call the scammer switched to 912-384-0948
They want to use TeamViewer, if you want to waste time you can really milk their default practice of typing it out letter by letter and having you repeat it back to them.
Unfortunately I have a concussion and they insisted I use my PC specifically whose screen is a major trigger of headaches so I wasn’t able to harass them too long. I had initially thought they would be doing something over the phone is why I called at all.

Did they use TeamViewer QuickSupport or the regular TeamViewer? And did they let you connect to their computer and switch sides or they immediately connected to your computer