Currently, linked CSV files published on Portal that are linked to Survey123 forms are only ever updated once per day in the mobile application. This is typically not an issue when the CSV data is relatively static, but in situations where CSV files are updated on an hourly basis, this means mobile Survey123 forms will only receive one update per day, even if more are made.
In my use case, this would be a valuable enhancement since I use linked CSV files to pass information to Survey123 forms from hosted feature layers to reference in an offline environment. By converting the attributes of a hosted feature layer to a CSV, I have been able to give my teams the ability to reference the most up to date maintenance information on an asset they could be doing work on, and without more frequent updates, a team in the afternoon may not realize that a problem was addressed by a different team in the morning. Below is an example of what this information looks like when passed to a lookup form used by teams on site:
