JWST/NIRSpec prism spectroscopy from UNCOVER of all three images of A2744-QSO1 in both spectroscopic epochs (see Table 2). Image A is shown in blue (dark for epoch 7, light for epoch 8), image B in red and image C in green. Left: Full NIRSpec-prism spectra, normalized to the total luminosity of image A in epoch 7, obtained by integrating the spectra in wavelengths 1.0 μm < λ_obs < 5.4, μm. Thanks to the new reductions (see Sect. 2), the broad Hα line no longer falls off the detector as in previous work, but is seen entirely here for the first time. Right: Zoom-ins on the Hα (bottom) and Hβ (top) lines, scaled by their continua listed in Table 3, such that they become independent of magnification, similar to the EW.