He is asking how to combine both uplinks on both primary and secondary firewall, how I understood it - that means an active-active mode of operation in addition to loadbalance the WAN1 and WAN2 port of the MX. Active-active mode of operation is not supported by MX. The bullets provided is sourced by the "internet" yes, more a list of arguments to why active-active mode of operations not always preferable and should be considered carefully, unfortunately chat-gpt was not involved in that process.
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