I think that's a fair assumption, Bollon produced a record on the Guilford label, for a group called Gross National Product, the group included Nick Barker who was the arranger on the Tangeers records. The Guilford label was owned by Oscar 'Bucky' Buchman, who owned another distributors called Redisco One Stop also on Guilford Ave. Guilford had 2 releases by B.B. and the Oscars, both produced by Buchman.
Edit.
I think Bollon also had something to do with Newark records, Bollon produced on the label, and the TNJs recorded on it, which was why I wondered if the Tangeers and TNJ's may be connected, as there were strong links back to Baltimore.