filters can be combined with standard Python boolean operators. So, presumably something like:
cds_view.filter = BooleanFilter(booleans)
cds_view.filter &= BooleanFilter(more_booleans)
I say “presumably” because, without a complete Minimal Reproducible Example to actually try out and run, the best I can do for you is point at relevant documentation and speculate.
For Bokeh 2.4.3 you should just be able to append the new filter to the existing list of filters. Or you can logical-and the lists of bool values together manually, and then set the booleans property of the existing filter to this new and’ed list.
Edit: note also for version 3.0, views no longer have a source property.