How often, after applying for jobs, have you been left frustrated and disappointed by a prospective employer ceasing all communication with you and vanishing at a certain point, not even telling you whether your application was a success or failure?
Now, fast-forward to the current work of your hiring managers and HR staff, and you can probably begin to realise precisely why that situation comes to pass so often.
More information: https://www.webrecruit.co.uk/blog/recruitment-insights/why-its-so-important-to-keep-communicating-with-your-pipeline-candidates/