<p>He did not say that. He said Daisy has learned a lot over the past five years in general, given that she has been with S.H.I.E.L.D. for just over 5 years.</p><p>
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<p>He pretty clearly says that he "can't wait to debrief" her about the past five years. There's no way it's talking about the rest of the show, since Mack was literally there? There's no reason why he'd need to debrief her unless she was in space the past five years.</p>

<p>Yes, the conversation is about debriefing each other about the time they’ve spent apart, but that time spent apart is only a year. </p><p>
</p><p>The “5 years” line is specifically about how they’ve gotten used to crazy things within those 5 years and how the events of the past year are no exception.</p><p>
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<p>While I don't think they would contradict themselves by saying "One Year Later" at the start and then say it was five years, the conversation in this episode is a bit confusing and could be interpreted different ways. What I heard was "Where you'd been the last five years..." - And while I don't buy that she was gone for five years, that comment does sound like he would be saying that's how long she was gone for. However, I prefer it being about what they have experienced in the last five years.</p><p>
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<p>Simmons flat-out says in this episode that it's funny what a year of space travel will do to you.</p>

<p>Have now watched the episode, and yes. Mack's saying that she should have known better from the last 5 years than to believe she wouldn't come back to something even more bizarre than space. Not 5 years in space.</p><p>
</p><p>As Greater good says, they discuss the year in space at the beginning of the episode.</p>

<p>It just confirms it is like 5 years since they know each other in 2014</p>

<p>5 years refers to all the seasons he’s been with her. (S2: 2014-2015, S3: 2015-2016, S4: 2016-2017, S5: 2017-2018, S6 2019)</p><p>
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