Aircraft use at BRU after 22/03

[A330]

Hi,

I was enjoying the Sun this afternoon while watching some aircraft descending into BRU. Just after 16:00 I saw a QR A320. I was surprised as I thought QR operate the 788 into BRU. That made me wonder whether this was a one off, a downgauge during the weekend or a scheduled downgauge after the attacks of 22/03, and the decreased demand since.
Therefore my question. Are QR or any other airline using other (smaller) aircraft to BRU than previously?

[Airbus A330]

Dear A330,
You saw the Qatar Amiri Flight registered A7-MED.

https://www.aviation24.be/forums/viewtopic ... 00#p340500