ER - Hearing back after first round interview?

Hi all,

24M, 1 yr out of target university, decent but not stellar grades, working for a no-name micro boutique (just 2 Directors and me) helping my bosses out with stockbroking / private wealth / ECM. Did the CFA Research Challenge at university and made quite a deep run (won the local round and regional, made it to sub-regional round). Passed CFA L1 recently in top 10%.

Reached out directly to hiring analyst directly at a BB with my CV to 'bypass' HR for an 'entry level' research associate role (to fill a seat that will be vacated in ~6 days, very lean team with just covering analyst and sole associate). He was interested so set up a call and we had a 'chat'. Was a really short chat / interview - 15 min only where he asked why research, stock pitch and asked me to explain revenue / cost drivers and assumptions for the stock pitch. After this, he said that was all the questions he had for me and so I asked him some questions on his background / the firm / role and we talked about that for another 15 min or so. 

I think it went pretty positively - he asked to make sure I had applied formally through the website, took the time to explain the interview process, saying potentially a HR call (or not) and then maybe a few more interviews with Head of Research / other analysts / S&T, and lastly a modeling and writing test. It's been 10 business days and still no word back. Granted, we are in the midst of earnings season here but all / most of his coverage has just finished up reporting in the last day or two. 

Can anyone here shed some light on what the process is typically like? Have I been dinged or is it just genuinely a slow process especially with reporting season wrapping up? I would've imagined they would be eager to fill that seat given how lean the team is run and how soon till the current associate is leaving. Lastly, should I send a follow-up email?

Appreciate any insight, cheers.