How long have Focus Group and Neighbour Group people been in contact overall?

Probably hundreds of years.

What is the overall time frame when the largest number of people had the most opportunities for interaction?

Not sure about pre-colonial times. Recently interaction is easy thanks to roads and technology

How long have Focus Group and Neighbour Group peoples been forming families with each other for?

Since pre-colonial times, probably for hundreds of year

What’s the time frame of densest contact between Focus Group and Neighbour Group as far as family formation is concerned?

Probably the last few decades, with improved roads and communica-tions.

How long have Focus Group and Neighbour Group people been involved in the knowledge domain together for?

500-1000 years

Speculative. The Marori have assimilated completely to the Marind system of cults and totems, so there must have been knowledge transfer in this area.

What is the time frame when the largest number of people had the most opportunities for interaction in the knowledge domain?

unknown

How long have Focus Group and Neighbour Group people been in contact in the local community?

since pre-colonial times - probably hundreds of years (same response as for trade etc)

What is the time frame when the largest number of people had the most opportunities for interaction in the local community?

Not clear how big the Marori community was at its peak. It dwindled in size during the first half of 20th century but has increased in recent decades

How long have Focus Group and Neighbour Group people traded for?

500-1000 yrs

The languages have probably been in contact since Marind-speaking groups arrived in the area (where Marori-speaking people were already present). This happened at an unknown point in pre-colonial times, but given the separation between the Marindic subgroups I'd guess a few hundred years ago. Not known if they traded during this time, but I'm guessing they did.

What is the time frame when the largest number of people had the most opportunities for interaction in trade?

1990-2021

Improved road transport during the last decades means more opportunities for trade.