text: The PT navigation in OsmAnd is still a beta version, those things happen.
  STIB/MIVB 81 is apparently not imported, although it successfully passes all validation tests and has been fully PTv2 compliant for years.  This is not a problem with OSM source data, and there is no gap in the route.
  I am currently testing whether lifting the "wheelchair=no" restriction makes any difference for OsmAnd.  If it does not work, the problem will be escalated to OsmAnd.  Closing the note here.