Hi @Anonymous User
Before Covid-19 if it was a straight forward switch over without the need for an Engineer then from my three switch overs to NowTV Broadband for myself and family members it took 14 days from date the order was placed.
If you use Twitter then you will be better off sending them a tweet for the official answer or if you don't use Twitter, drop them an email using the address in the screen shot below.
Also have a read of this linked article about How to Switch to NowTV Broadband.
https://help.nowtv.com/article/how-do-i-switch-to-now-broadband
