It’s an article from July 2009, but I just saw it. A pretty lucid description of the problems faced when mixing a “manager” view of time and a “maker” view of time.
I face this every time I step away from single-client work to develop other business projects. The business side of my responsibilities wants a day split into little chunks in order to make progress on a wide range of tasks, most of which involve meeting or co-ordinating with other people. The software development side of my responsibilities wants a working period with the longest contiguous periods I can manage. Concentrating on either way of working always seems to be at the expense of the other.