ffmpeg merge two commands

I have two ffmpeg commands which work as expected- 1: a simple recode, removes sound

ffmpeg -report -i $MP4FILE -an -vf hflip -movflags faststart $OUTPUTFILE.mp4 -nostdin

2: an overlay with an image for branding:

ffmpeg -i $MP4FILE -i OverlayTest.png -filter_complex "overlay=0:0" TestBrandVid2.mp4

I need to combine these commands into a single line (in a bash script), but I am having trouble with the syntax (and with understanding the syntax from the ffmpeg documentation...) - the following doesn't work:

ffmpeg -i $MP4FILE -an -movflags faststart -i OverlayTest.png -filter_complex "[0:v]hflip[a];[a][1:v]overlay=0:0[out]” -map “[out]” TestBrandVid2.mp4 -nostdin

Can you help? Thanks!

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