Edge Sync Use Specific Hub Transport Servers

Hi, 

I am setting up an Edge Synchronisation for mail flow to Exchange Online (Hybrid). I would like the email destined for Office 365 to route via my new Exchange 2016 Mailbox servers  and then to the Edge Transport servers, and not use the old 2010 Hub Transport servers, however there doesn't seem to be a way to achieve this from what I can tell? How can I force the Edge to Internet send connector to route email via my new 2016 Transport servers before sending to the edge? 

Thanks.

Mike.