Match the window before the distance.
Set a planned block and practical endpoint before matching; this longer south-Wales connection should not be described as casually nearby.
Starting around Cardiff
At the Cardiff end, use “A connection between the cities usually benefits from advance planning and clear availability.” as a scheduling prompt rather than a claim that the whole route is local.
Planning around Swansea
At the Swansea end, set a planned block and practical endpoint before matching; this longer south-Wales connection should not be described as casually nearby.
Compare both local pages
Treat each town as a separate local context, then use the overlap planner rather than assuming the full route is convenient at every time of day.