Oh yes, I had those days when I had to transfer a huge number of contacts from Linkedin without interruption. Fortunately, those days are behind me. Export LinkedIn contacts using Dripify
https://dripify.io/features/leads-data-export-to-csv/
Linkedin profile scraper. The program transfers them into a CSV file in seconds. It's quite handy that on top of that it also exports phone numbers, email, full name and website URL.