Name: Monty Riggles Henry County, Virginia (Zone 7b) Do you ever wonder if you have too
Not sure how this would apply, but perhaps that PBF shows up better depending on what zone it is in. Alternately, your Concertina(s) may not have PBF period.
Good luck with this mystery - though, both are equally pretty to me!
TB 'Starting Fresh' blooming for me in May of 2022. It bloomed for a week and a half with nine buds.