I can sense some lack of logic here.. Acc to them (say Norms), a round trip of >3500 should be taken to pitlines at both destinations.. But actually the idleness at MAS has nothing to do to effect the rake. They should have relate it to a single trip and treat it as CBE - MAS - ADI rake and continue the RSA with Pitliine attention at CBE and ADI as it was.
Its something like strictly going by the lines in the book leaving the interpretation aside.