Recliner wrote:

Just curious, but I wonder if the contest rules allow using LO
between H&W and Queen's Park, instead of a Bakerloo train, if the
former turns up first? You'd still visit the same stations.

The rules are that you can use services that share the same rails as LU
to visit stations, eg LO to Harrow & Wealdstone / Richmond and Chiltern
to Amersham.

Peter Smyth