Hitron CODA - 45 and Asus RT-AC86U Dual WAN

Hi, I recently upgraded my internet connection to 500 mbps. The ISP sent me a Hitron CODA - 45 modem which has 2 lan ports in the back. I see my asus RT-AC86U supports dual WAN which mean 2 different ISP/internet connections. Would connecting two cables from the modem to the router and enabling dual wan on load balancing give me anything extra? actually would this setup even work? Sorry, I know this is a stupid question but thought I would ask in case my knowledge on the matter is worse than...

Hitron CODA - 45 and Asus RT-AC86U Dual WAN