John Smith wrote:
"Actually not."

Actually so.

The input impedance of a 1/2-wave section of dissipationless line is a
repeat of its terminal impedance. The 50-ohm terminal impedance will be
repeated as the input impedance at the sending end of the 450-ohm line.
Likewise, the 50-ohm impedance connected to the sending end of the of
the 450-ohm line will be repeated at the output end of the 459-ohm line.
Cecil`s example is symmetrical. There are no lossless lines but
practical lines are close enough.

Best regards, Richard Harrison, KB5WZI