I must change part of my response. Some welcome insight from another transcriber leads to the following conclusion:
Although 41 minutes is not in itself technical material, the BANA committee has discussed this and unanimously agrees that the whole expression (41 minutes 56.23 seconds) would be enclosed in switch indicators as opposed to parts of a single expression being transcribed in two different codes. This really is a single expression, not two separate ones.
Thank you for your patience and understanding as we ALL continue to learn about the relationship between UEB and Nemeth Code!