A fronted object with a comma

The narrator recalls his childhood.
He was going to a boarding school near London on a coach, now was walking a street in London with a master of the school.

Then, at a grocer's shop, we bought an egg and a slice of streaky bacon, which still left what I thought a good deal of change out of the second of the bright shillings, and made me consider London a very cheap place. These provisions laid in, we went on through a great noise and uproar that confused my weary head beyond description, and over a bridge which, no doubt, was London Bridge (indeed I think he told me so, but I was half asleep), until we came to the poor person's house,
[David Copperfield by Charles Dickens]
I'd like to know if "these provisions laid in" is an object "went on."
Thank you in advance for your help.