« vous êtes chez vous » pronunciation question

Hi,

I was listening to a podcast and heard the phrase "vous êtes chez vous." The whole pronunciation sounded odd to me. I expected the "ch" to be pronounced as /ʃ/, but it sounded different, the whole word "chez" almost sounded like /tʃ/.

I thought this might be due to a liaison (I guess?), but I couldn’t find any information on the case with "vous êtes chez" when I googled it. Even the DeepL voice pronounced the same for me, so I guess there should be an explanation for this.

Can anyone kindly explain this? Thanks!