yes, that is what a friend does with 3 routers, one is master assigning ips with the dhcp enabled, the other two are just following the first one and leaving the main router to do that
in fact he does have the same wifi network on all 3 routers to cover his house and thing is working well for him
but it is known that some routers are stubborn, refuse to cooperate in this situation, you add a complication layer with the ipv6 here, so be patient and follow manual form those two routers, you will make it work, just read the manual on how to make it disable dhcp and work with ipv6