Cecil, W5DXP wrote:
"They", above, are reflected waves. The two waves traveling in the other
direction are forward waves."

Forward waves? Being, I suppose, a voltage wave and a current wave, as
it is impossible to have two voltage waves or two current waves of
identical frequency traveling in the same direction on the same line.
Two identical frequency waves, voltage or current, form a resultant and
merge. They can`t maintain a separate existence and become inseparable
in a single waveform.

Best regards, Richard Harrison, KB5WZI