The other options ,in settings >advanced sound >settings on there to tweak or even individual app
I went to Settings > Sound and Vibration > Advanced Sound Settings
The only option there is Sound quality and effects.
I went to that and only 1 of the options falls under Dolby. (which is Dolby Atmos, the only options that it has are the ones I noted above)-- There is no Advanced option.)
I looked at the other options here and it is only Equalizer and Adapt Sound, which are both about which pitches should be louder than others.
In the absence of a fix to this problem, I'll take a suggestion of another PodCast app that
a) reliably sends notifications when there are new episodes available
b) allows you to mark episodes as "listened"
c) supports casting to Google Home Mini and listening in the car via bluetooth without issue (which unfortunately, is not the case for Castbox -- it keeps skipping back 10 sec while casting or listening in the car)
and
d) does not have a monthly/annual fee