Accessing Exchange GAL on Android On iPhone, in contacts, you can tap Groups, Global Address List, and then search the GAL for a contact.

I cannot find a way a way to do this on Android.

Is there a way of searching the GAL of a connected Exchange account?
I imagine you are talking about Exchange Online. On Android, it is not possible to search the GAL from the Contacts app. There is one way to do it: install the Nine email application, which is an alternative to Outlook. It enables the integration even for Contacts app (besides allowing from the Nine app itself).