What's your evidence for the discretion of the chair of the 1922?
https://www.theguardian.com/politic...-lurch-to-right-adds-momentum-leadership-vote
Paragraph 4:
It is understood that Sir Graham Brady, the chair of the 1922 Committee, will have to use his own judgment about whether to announce the milestone being passed straight away if it occurs while parliament is off this week, or wait until Monday, when the House of Commons returns after the Queen’s jubilee celebrations.