Chicago SA Recruiting - 2021

I know it is still fairly early, but I am interested to see if anyone knows when Chicago banks are starting their SA recruiting processes this year. I know Baird, Lincoln, and Piper are all kicking off soon, and GS goes July 1. Any insights into other banks? Specifically interested in William Blair, HL, CS, Citi, Greenhill, but interested to hear timelines on any other banks as well.

Also, any thoughts on whether it is too early to start networking with bankers? I have reached out to a bunch with low response rates (I am non-target, and have few alumni in Chi). Some bankers I have spoken with have indicated that now is a great time to start networking (mainly those at Baird, Lincoln, Piper) and others have indicated that it may be a good idea to wait to reach out. Any thoughts?