How to bond two physical lan port which carry Trunk to make master trunk

Hello all,
I’ve never used bonding protocol and was not necessery but now im stating my own isp in which all the service routers will be mikrotik at core so,I want to use onen router for PPPOE service ,another for Hotspot,DHCP,management etc purpose so.I want to ask how could i merge both the router’s LAN consist of many VLAN to make a giant trunk Port so that i can use single physical link to communicate with the both router VLAN.
This may be little confusing so, i have drawn one picture to make you all clear.
Bonding.jpg
Please, help me .
thanks in advance (helping hands).