Great question.

I'm quoting from https://medium.com/androiddevelopers/a-safer-way-to-collect-flows-from-android-uis-23080b1f8bda

"Important: Fragments should always use the viewLifecycleOwner to trigger UI updates. However, that’s not the case for DialogFragments which might not have a View sometimes. For DialogFragments, you can use the lifecycleOwner."