I agree there is no direct relationship. P and B. are related by their dermatologic indications. A large pharmaceutical company with a large sales force may be interested in both drugs as possible treatments for a wide range of skin conditions eg psoriasis, eczema, acne, acne rosacea, hidradenitis suppurativa, diabetic skin ulceration, pressure ulcers as well as bacterial skin infections.
A pharma company with an experienced sales force could market the 2 drugs not only to dermatologists but also to pediatricians, family practitioners, internists, nurse practitioners. Then when you add the possible gastrointestial , ear and eye indications you can add specialists such as gastroenterologists, otolaryngologists ophthalmologists and optometrists