being interrupted in the middle of a fight sucks so I wouldn't suggest that but if it doesn't interrupt the flow much I would do back and forth chapters so we don't have to wait 10 chapters after Michal is done with the tournament fo Gaya to come back
The 4xM 4xG format is better since it's less likely to get the story mixed.
Unless the action of one of them impact the journey of the other one and we need to see how the development. đ¤đ§