Waterfall plots of the three brightest bursts from FRB 20240114A that were detected simultaneous to the XMM-Newton observation on May 23, 2024 (left: B1, center: B2, right: B3). RFI-flagged channels are highlighted by the gray lines on the left. The top panel shows the flux density, averaged over the displayed bandwidth, excluding RFI-flagged channels, and the time windows used for the fluence calculation (red lines). The displayed bandwidth for B1 and B3 covers UBB sub-bands 1 and 2, while B2 is shown in UBB sub-bands 3 and 4. The color maps are scaled individually for every burst from minimum to maximum flux density.