MikroTik Load bonding, is it possible?

I have successfully configured my two wans as Load balancing and Failover and im wondering if it is possible to configure it as load bonding using 2 modems or ISP and 1 MikroTik device.
WAN1 -2mb
WAN2 -2mb
LAN -4mb

Thanks in Advance for the advice/comments

You can do that if you use same ISP and the ISP on other side put one bonding device…

Or if you create two tunnels, also with different providers, to another device on another connection,
if the connection on other side have 4Mb tunnels + 4Mb traffic.
With this way you use the two 2Mbit connection to create one 4Mbit bonding line for use another 8Mbit connection…

Not all the time is possible to use two IP address at the same time for “bonding” the lines…

If it is a MikroTik,

Then almost anything is possible.