What is content download time in Chrome?

“Waiting (TTFB)” is the time between the end of the request and the start of the response form the web server. (TTFB stands for Time To First Byte.) “Content Download” measures how long it took to download the response to the HTTP request after the latency is over. … (This would be “Waiting (TTFB)”)

For More Information Please Refer: https://superuser.com/questions/1461714/chrome-developer-tools-network-content-download-column