This plant is John Boggan’s hybrid of Gloxinia erinoides ‘Red Satin’ and Kohleria rugata. It has flowers substantially more Kohleria-like than the widely distributed xG. ‘Rosea’. It does, however, have something of the inflorescence pattern of the Gloxinias, as illustrated in this picture of G. erinoides ‘Red Satin’.
Gloxinia erinoides was previously known as Koellikeria erinoides, hence the previous cultivar name above.