pronunciation - Linking: Sibilant with Other Sibilants (was + starting)

I read in an American Accent book that there is no break between sibilants adjoining each other between words. For example, this phrase:

I was starting to worry.

The words was + starting sound like [wəzstɑrt̬ɪŋ] with no break. Am I right? I marked the sibilant sounds with bold.

I used the schwa sound in was because it's a function word and we usually give stress to content words and reduce the function words. I also used the tapped T in the word started.