It seems that the mysterious transfer of operating airline of BRS-BRU from SN to BM on 29OCT becomes even more mysterious. It's switching back to being SN operated, using BM aircraft, from 25MAR18.
So, what on earth gives here? It seems a tremendous upheaval to switch operating airline for the W17 timetable, only to switch it back at S18. Bear in mind, same aircraft, same crew, same timetable.
The only possible reason I can find is that it looks like (some) aircraft are working BRS-BRU-EMA-BRU-BRS - and I've worked that out because today's EMA-BRU is delayed with the knock-on that BRU-BRS is delayed.
But as someone who booked a BRS-BRU-BRS flight using the LH codeshare (which fell off when it got swapped to BM, and caused me massive headaches trying to get it reticketed - and now I can't get lounge access at BRU as a Star Gold, because the operating airline is BM), it's a tremendous disruption.