Uh, excuse me.....
https://www.pnas.org/content/105/31/10693
"As argued above, the M293 clade provides evidence of a migration independent of the initial Bantu expansion. If indeed M293 is indicative of the spread of pastoralism, then the Y-chromosome does not support the model of Bantu-speaking agropastoralists initially introducing sheep to southern Africa. Instead, haplogroup E3b1f-M293 points toward a different source population for the immigrating pastoralists. The shared Sandawe/Kxoe and Hadza/Datog/!Kung haplotype supports a connection between radically different branches of Khoisan. However, it is also possible that a third population contributed the same haplotypes to both the Sandawe, Hadza, !Kung, and Kxoe within a relatively short period. The Hadza/Datog/!Kung haplotype sharing supports this hypothesis. More than any other East African population in our dataset, the Datog dominate the M293(DYS389I-10) diversity (
Fig. 1) and overall M293 diversity (
Table 1). Newman (
36), in his study of the Sandawe subsistence strategies, describes one Sandawe clan, the Alagwa, which is derived from people with Barabaig heritage. Barabaig is a dialect of Datog, a Southern Nilotic language, and Barabaig individuals self-report their ethnicity as Datog. This Barabaig clan became incorporated into the Sandawe because of their purported rainmaking abilities and eventually came to occupy a dominant position within the Sandawe society (
36). Ethnographic evidence and shared Y-STR haplotypes support exchange between Tanzanian click-speaking groups and Southern Nilotic-speaking groups in Tanzania (
10). Given the high frequency and diversity of E3b1f-M293 in the Datog, our data provide tentative support for a Southern Nilotic linguistic affiliation of the population responsible for introducing pastoralism to southern Africa."
It's not me, re-writing history.
Notice the use of the word "Khoisan". Notice that the pastoralist migration they are talking about has Nilotic connections, not Cushitic. Read the whole paper. It was a demic migration, ie the livestock and the people physically moved.
We don't yet know about the Eyle.
Some links would be nice.