Makes sense. Unfortunately we currently don’t expose this information. In many cases server side ad insertion comes with some metadata signalling, is this something that can be used in your case as well?
Would an event signalling a period switch be enough similar to the PeriodSwitch on the web SDK already help?
There is always the option to use the network API to intercept the manifest on a low level but this requires additional parsing which I understand that this is not ideal. Maybe this can help as a workaround.
Please feel free to add this as a feature request if none of the above works for you.