I have 2 O365 tenants and want to simply grant customers from the company tenant over into the companion tenant for SharePoint On line. The B2B looks like It might be the easiest, but will it guidance Sharepoint On line. The one case in point I see in MS docs https://b2baffiliations92457.designertoblog.com/64404977/b2b-communications-can-be-fun-for-anyone