17 weeks...

“Thomas Grey, Marquess of ­Dorset, and it was probably through the ­latter’s patronage (MacCulloch points out) that he came to sit as an MP in the Parliament of that year—which he memorably summed up as seventeen weeks of talk about the common good which left everything exactly as it was before.”

Src: https://www.firstthings.com/article/2018/11/the-monsters-servant