The R1a-Y3300 (aka L1280) found in Serbia and Bosnia seems to have expanded from Poland via Hungary during the early medieval period. The Croatian R1a-Y2608 also expanded from Poland during the same period, but via Czechia, Slovakia, Austria and Slovenia.
Ez bizony a DAI jelezte szorb/fehér horvát vidékről történt beköltözés lehet, "Hérakleiosz császár idejében". (Egy kis avar hozzátéttel, akár.)
A délszlávok között frekventált R1a (Y-DNS haplocsoport) szubkládok elterjedéséről:
"Regional disparities also exist in ex-Yugoslavia, but among deeper clades. Bosnian and Serbian R1a belongs for the most part to a young clade of CTS1211 (Y33>CTS8816>Y3300>Y5647>YP611>YP3987>YP3992 subclade; TMRCA 950 years), with a minority of older M458 (CTS11962>L1029 subclade; TMRCA 2200 years) and Z92 (Y4459>YP617 subclade; TMRCA 3400 years). Croatian R1a falls almost exclusively within CTS1211, but to another clade (Y35>CTS3402>Y2613>Y2608 subclade, TMRCA 1950 years), with a small minority of YP340>P278.2 (TMRCA 2100 years). The R1a-Y3300 (aka L1280) found in Serbia and Bosnia seems to have expanded from Poland via Hungary during the early medieval period. The Croatian R1a-Y2608 also expanded from Poland during the same period, but via Czechia, Slovakia, Austria and Slovenia.
Bulgarian R1a is very diverse in comparison to Dinaric R1a. Subclades equally divided between M458 (mostly the pan-Slavic L1029 subclade) and Z280, but with a huge diversity within the latter, (Y33>CTS8816, YP237>YP235>L366, YP343>YP39082>YP340, Z92>YP617 and Z92>Z685). There is also a little bit of very old R1a-M198 (M417-), and some R1a-Z93, notably the Y15121 subclade found in Iran, India and the Middle East, and which could have come with the Scythians or other Iranic steppe tribes. Little data is available for neighbouring Macedonia, but it includes at least L1029 (under M458) and L366 (under CTS1211).
Romanians have an even greater diversity of R1a clades than Bulgarians, despite not being speakers of a Slavic language. In fact, not all Romanian R1a is of Slavic origin. It includes Germanic clades (L664>S2894>YP285>YP282 and Z283), Iranian ones (Z93) and Jewish ones (CTS6). The Slavic clades represented include L1029 (under M458>CTS11962) and YP951 (under CTS1211>Y35>CTS3402>YP237>)."
Valójában nem ismerjük az Avar Birodalom felépítését, milyen "csatolt" vagy függő részekből állt, a függőség milyen fokán állhattak egyes részei a különböző időkben. Könnyen lehet, hogy úgy van, ahogy írod, és ott lazább - esetleg csak névleges- volt a kagántól való függés.
