Intune MAM App Policies - Normal behavior on Android

Question about MAM (Mobile app management) "without" enrollment on Android devices.  

Ive just turned on MAM App Policies - I have 2 seperate Policies for IOS and Android, and it covers all MS Mobile apps on the list, ie Outlook, Word, Excel, OneDrive, etc

IOS testing is running nicely. Prompts users to choose a pin etc. Works a dream.

Android users however show a message as follows:
"To use your work or school account with this app, you must install the Microsoft Intune Company Portal app. Tap "Go to store" to continue.  

When the user follows this advice, they install the app but do not need to sign-in to it.  Its an extra step we do not believe is necessary.

Is this normal on Android??
My understanding is MAM does not need the "Microsoft Intune Company Portal app" .

Can we remove this message?
Advice from others who have set this up appreciated.
String
:-)
String :-)Windows EngineerAsked:
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String :-)Windows EngineerAuthor Commented:
I found my own solution
It is normal behaviour
https://docs.microsoft.com/en-us/intune/end-user-mam-apps-android

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