part 4 is offering some discussions and exchange on art history and even the weather. In this section of the programme, there seems a real exchange on views and opinions on Rothko.
Commentators seems to connect and offer opinion, mainly on the paintings. Discussions can be grouped over a period of time: some a year ago, another set 2 years ago.
Introductions between commentators include comments about the weather and location, informal chat, usually displayed when people meet in a more personal or synchronous setting.