hruodr saidYou must not forget that speecher dispatcher brings pulseaudio and not chromium. Chromium does not have pulseaudio enabled by default and dont start it automatically.
View attachment 10585
pkg info -r pulseaudio
output chromium as well as speech-dispatcher. I don't have access to his system, and I don't have chromium installed on my own system, so I can't check for myself. Please see his post #22. Thanks.