ffmpeg -i meowMumi.mp4 -filter_complex "
[0:v]trim=start=46.1:end=60.6,setpts=PTS-STARTPTS[vB];
[0:v]trim=start=84.626:end=92.1,setpts=PTS-STARTPTS[vC];
[vB][vC]concat=n=2:v=1:a=0[ov]
" -map [ov] newA.mp4
ffmpeg -i meowMumi.mp4 -filter_complex "
[0:v]trim=start=46.1:end=60.6,setpts=PTS-STARTPTS[vB];
[0:v]trim=start=84.626:end=92.1,setpts=PTS-STARTPTS[vC];
[vC][vB]concat=n=2:v=1:a=0[ov]
" -map [ov] newB.mp4