Rita, you have piqued my interest. Do you have any sources on hand that you can share? I mean beyond googling Chaput, I guess I can so that myself. Thx. :)
Wait a minute, and I will get it for you and be back in a minute.
Find, newliturgicalmovement.org.
Scroll to the first article, which is found listed under, Saturday, August 24th. Inside the first paragraph is your link.
I made an embarrassing goof. It is Msgr. Charles Pope, (not Chaput), who lends insight into the formality of early “house churches”.