Inverse split tunneling, kill switch, remote desktop & double VPN

[vik_91]

Good morning

I have 3 questions to ask you about which I have always wondered, but I've never found - despite searching - the answers.

1. I have an application running on Windows that I have included in the list of those to which the Kaspersky VPN connection should be applied, leaving all the remaining connections in non-VPN connection.
   At the same time, I enabled the kill switch function.
   
   What I'm wondering is: in the event that the VPN connection drops, does the Kill switch only interrupt the connections relating to the app for which I want the VPN to be active, or does it interrupt all internet connections without distinction?
    
2. Mantaining on a PC the same VPN configuration as in point 1 (reverse split tunneling on a single application + Kill switch enabled), is it possible to establish a remote desktop connection with that PC, both from inside the LAN and from abroad (connecting my PC to my LAN using a Wireguard VPN connection set on my Fritzbox router)?
    
3. If I am abroad, can I enable on my laptop 2 VPN connections? The first is a Wireguard VPN connection to my LAN router, and the other one is the Kaskpersky VPN, only applied on a singular app.

Many thanks in advance for your help