In some sites, BRW pottery is associated with Late Harappan pottery, and according to some scholars like Tribhuan N. Roy, the BRW may have directly influenced the Painted Grey Ware and Northern Black Polished cultures. BRW pottery is unknown west of the Indus Valley.
Researches and findings suggest that the Black-and-Red pottery flourished in Bengal around 1500 BC and continued to evolve, well past the Chalcolithic age, into the historical period around the 3rd century BC.
Use of Iron, although sparse at first, is relatively early, postdating the beginning of the Iron Age in Anatolia (Hittites) by only two or three centuries, and predating the European (Celts) Iron Age by another two to three hundred years. Recent findings in Northern India show Iron working since 1800 BC. According to Shaffer, the "nature and context of the iron objects involved [of the BRW culture] are very different from early iron objects found in Southwest Asia.
It is succeeded by the Painted Grey Ware culture.