By Simon Neville Natwest chair Sir Howard Davies’s housing comments are the latest episode in generational warfare and betray the risks of the C-suite echo chamber, writes Simon Neville If the baby boomers versus the millennials was a tv show it would definitely be a soap opera. The debate and animosity between the two groups has been quietly ticking along ever since the 2008 financial crisis and, like a soap opera, occasionally a storyline becomes part of the national conversation.Natwest’s chairman (and baby boomer), Sir Howard Davies, played a key role in bringing the debate back to the fro…