Bonjour Heather !
Indeed, the difference between "ont"and "honte" here is very faint, due to the presence of "de" after "honte", making the [t] and [d] sounds kind of merge with each other, which is tricky for non-native ears :)
I've now changed the audio to a slightly more articulate voice, and I think the [t] sounds more acute, but be aware that this "merging" would definitely occur in natural speech :)
Hope that's helpful!
Bonne journée !