Alan,
The Origin of R1b/R1a is epochs ane eons earlier than PIE. so, agree.
Now... dos M269 and L23 have anything to do with PIE? - I think so. I can run in a story, because stories have Time, something people here seem so often to forget.
in your view (so have all the liberty) what would be wrong with the following statements:
- Pre-pre- PIE (lets say 30% of PIE) , if anything similar to, was spoken by M269, somewhere in south Balkans. Let’s say Romania, Bulgaria even parts of Serbia, say 6500BC.
- We know that by 6500bc onwards, the contacts between this Iron gates people and Anatolian farmers was booming. So much that by 6300bc-6000bc, this former highly pastoral/no agriculture populations disappeared (except in Lepenski Vir) for that period of time, being replaced by Starcevo populations.
- However, by that time, 6300bc, we also see the rise of agricultural but atypical high big cattle pastoral population in Fikirtepe North of Anatolia. Related to Barcin but separated. Here, that previous population is learning lots of names from agriculture (lets say PIE is 60% formed).
- By 6000BC, we see the rise of a population that are master of domestication in south Caucasus, people saying that, because the amount of types of cereal they cultivate is so, diverse, so diverse, that is strange. All types and even having Spelt, coming from the Balkans. As if collecting species on route. They kept however having a strange large amount of Pastoral live and an even strange doubt in everyone’s mind because were very transhumance like people -These is L23 was born (5500bc?). As was PIE (70%)
- Later stages, 5500 bc onwards, sees increase contacts of Shulaveri with parts of Nortwestern Iran and Azerbaijan. There is where one sees that hajji Firuz Z2103 (5400bc?) By then, after so long contacts with Pure CHG in georgia and some Iran_neolithic they have a very composed language, very rich and a good admix for that matter.
- By 4900 BC! – Shulaveri was gone, altogether. 100% PiE Perfectly speaking PIE of R1b-M269 and L23 and Z2103 moved several places. Scatter. Some to the hills (north and south) just miles way. Some back to the east cost of black sea into Kuban river (Mesokho and so forth) and later up samara river to be part of Khvalynsk and later Yamnaya. Here thy might become LPie or whatever.
- The same PIE speakers, moved back to Balkans. Maybe L51 was born there and disseminate with Bell beakers (I still doubt it). But my problem is. If Yamanya spoke PIE and let’s call it Shulaveri-Balkans also spoke a similar language by 4000 bc. And for sure not long they were in contact again… it just roughs the story of Steppe a little bit because Lpie might not be just steppe, does it not? But surely ties it very well for R1b-L23 and PIE, does it not?