Linking Multiple Tenant Environments to a Single License

I’m trying to triple check whether or not an “Enterprise” tier license is required in order to Link Multiple Tenants to a Single Subscription. Following this documentation here it leads me to believe that the answer is yes but after speaking with a sales representative and looking at the pricing breakdown it shows the Essentials plan for B2B can have 1 production tenant and 2 non production tenants. Can I get some clarification on this please?