UPDATE: received a reply from PI wishing me a good luck on my future endeavors.
I have sent my CV and letter to a PI. The PI received and replied me "we will review and get back to you". As of now, 30 days has passed and I have sent a follow-up email two days ago. Is it normal that PI just ignore or not reply to candidate who they think doesn't fit into their lab?
I'm kinda confused with the last reply and not sure application review process usually take this long. (The lab is quite big with 15-20 postdocs).