Opposite question.

If I have a ticket Vancouver to Brussels via Frankfurt, can I get my bags at FRA and then skip the flight to BRU?

For weird reasons, there is ticket avail Vancouver to BRU via FRA, but not on just the FRA flight!

My idea is then just to pay for a FRA to EDI flight, rather than use the Vancouver-FRA-BRU-EDI route that is available.