They each have their own protection detail. Each will quickly move to protect the one they are responsible for, which will mean separating them (probably by a lot of distance).
Someone under SS protection can choose to waive it. There are some former presidents who deemed it unnecessary later in life.
No idea about the rest of your hypothetical
You should probably know that strangling someone is a strong indicator of a future murder attempt. Far more than other forms of battery.
You definitely need to consider your own safety, and those around you