Is it possible to connect one electrical device to two electric sockets?
Best case, a loop. Worst case, short circuit.  



The simple way is with a suicide/widowmaker cable.

The other way is with a hotplug field kit. Often used by forensic teams to confiscate computers and servers without turning them off. Which is a really unique bit of kit.

The correct way is the get a UPS for the TV and just swap the UPS plug.