You have thousands of sensors receiving information at very high rates, ALL the time. Whether you are focused or not, you never have any direct awareness of their individual signalling.
Yes, focus is a high level feature that allows us to have access to more information than we can process deeply at any given time, without being overwhelmed by it.
We can narrow our focus, yet still have the benefit of all that information being processed by process parallel to our focus - ready to interrupt our focus if something is surprising, important, painful or pleasurable.
And of course, its all there ready for us when we change focus.
So having more information available is just that, having more information available. We can still focus and unfocus.
You have thousands of sensors receiving information at very high rates, ALL the time. Whether you are focused or not, you never have any direct awareness of their individual signalling.