H29α Data combination: Comparison between 12 m only and full dataset for capturing the H29α flux. Left: integrated intensity of H29α towards G302.02, where the blue contour shows the 10% power contour of the emission. The map was created with a 3σ clipping mask and the greyscale is limited to 50% power to highlight the low-lying emission. Right: H29α spectra integrated within the 10% contour shown on the left. The blue (thick) line shows the 12 m only data, while the red (thin) line shows the combination of 12 m and ACA data. The lack of significant differences between the spectra suggests that the ACA is not required to capture all of the flux from the RRLs.