Online application (expedited) submitted late January 2023 took just under 9 weeks
Here is my recent experience:
1/27 - renewed passport online paying for expedited delivery, which should take 3-5 weeks according to the website.
1/30 - system showed "in process"
3/30 - US Postal Service Informed Delivery showed item from Tucson passport office to be delivered by April 1. Checked passport status in system and it showed "printed." No email from Passport Office itself even though I signed up for notifications.
3/31 - passport delivered
Total time was just under 9 weeks, consistent with the current timeline of 7-9 weeks for expedited delivery (but longer than the 3-5 weeks I was given on 1/27).