Regardless of impedances, with a sensibly zero-loss line it's quite obvious
ALL the power leaving the generator is dissipated in the load. There's
nowhere else for the stuff to go.

If any power is NOT dissipated in the load due to any cause then it never
leaves the generator.

What on earth have bouncing waves, virtual this that and the other got to do
with it.
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Reg, G4FGQ