Discrepancy between chat and main reputation

Question

A recent question - Reputation linkage between main site and meta? - regarding the linkage between reputation on meta and main mentions a discrepancy that is resolved every hour on the meta-side.

However, there also exists a discrepancy on the chat that I cannot resolve. Consider, for example, my reputation on the main site:

Now, compared this to the reputation posted on chat:

Where does that difference of 320 come from?

Answer 1

On chat.se, the reputation shown is the sum of your reputation across the network.

*Note that chat also syncs your account information hourly, so there can also be a bit of a cache discrepancy there.