[eftychis]

As the sibling comment noted, you were within the legal prescribed boundaries. The flag is automatic if something is off. No person (I think/in general/most countries) sits and counts days. The computer does.

In fact if they note they can not track exactly how many days you were in and out of the country that is a separate flag, that would likely in most jurisdiction lead to questioning.

(Source: friend had to pull his tickets and explain his travel path, when following unusual route via Schengen in between his entry/exit.)

[alibarber]

Currently in the countries of the Schengen area - a person is supposed to do preciesly that at border control, the electronic entry-exit system, targeted for launch in 2022 is (was) supposed to be that computer however.