They were coming from Latvia. Interesting.
https://globe.adsbexchange.com/?icao=c2c1fb&lat=62.254&lon=9.539&zoom=3.7&showTrace=2022-02-03&leg=1
Belgium to Latvia. An interesting trip indeed
https://globe.adsbexchange.com/?icao=c2c1fb&lat=50.396&lon=4.830&zoom=6.2&showTrace=2022-02-01&leg=1
(post is archived)