Going to BI4 and VPN

When I log in via Teamviewer, the entire desktop from my BI PC is now a window on my remote laptop. It is just as if I am sitting at the BI PC with keyboard and mouse. No UI3 or RDP necessary. I do not understand the issue?
No issue with TeamViewer, haven't tried it just yet. Going to work on it tomorrow. Need the whole day in case I screw up my whole computer.
 
For remote login you can also use RealVNC.
They have a free (Personal/Home) type of link hidden somewhere on their website.
I use it daily to remote in to multiple machines.
You can add i think 4 or 5 pc’s to your account.
They also have a phone/tablet app.