Kits 486614 (R1b Group 2) and 305545 (R1b Group 19) have both tested Big Y. The results show that R1b Groups 2 and 19 share a common ancestor. This ancestor lived far enough back in time that it looks like they are two separate groups (when looking just at STR markers). We are talking in excess of 1000 years.

Work done by the FTDNA R-FGC43417 Haplogroup Project.