vsan/ha cluster and network partitions

I'm wondering what will happen in a vsan/ha 4 hosts cluster when there's a network partition without an external heartbit datastore.

Let's make an example:

host1 contains the running VM

host2 contains copy1 of the vmdk

host3 contains copy2 of the vmdk

host4 contains the witness

If there's a network partition between 2 groups, (host1 sees just  host2 and host3 sees just host4)

The first partition (host1 and host2) do not power off the VM, because it is not a network isolation but HA in the second partition will restart the VM (host3 and 4 contains 50%+1 of the votes).

So we have a split brain with 2 copies of the VM running?