hello after cut-off between spindles in G140, i change to G141 in order to machine on 2nd spindle

during this sequence, 2nd spindle stops ( after transfer as slave for 1st spindle that stops ) then starts spining again under G141 mode

please is it possible to stop only the 1st spindle, and keep revos on 2nd ? thus is it possible to use M150 without stoping s2, or is there a wayarround ? kindly