Browsing history

So not too long ago my husband told me he wouldn’t look at porn anymore. I checked his browser history (yes I know ). So he has an android and both google app and chrome app. So I checked both apps history and they always add up except for tonight when I saw on his google that he looked up porn twice but when I went to chrome so I could view the detailed version of the history just the porn parts of his history was gone. He knows I do this but not how I basically snoop. So I’m guessing he tried to be slick and erase what he thought was the only history of his porn sites.

Does that sound correct?