X-ray (top) and millimetre (bottom) time series collected around the epochs when the two millimetre flares were detected. The X-ray light curve is binned at a time resolution of 10 s, and the millimetre light curve is binned at 15 s. Arrows indicate 3σ upper limits. Note the lack of coverage in the millimetre band for Flare 2 before and during the switch from the high to the low mode in the time interval between two consecutive ALMA scans. Note also the different scales on the horizontal axis in the panels on the left and on the right.