Originally Posted by
xliioper
You realize that TK and DL are in separate terminals (Evans and McNamara) which are only connected via a landside shuttle bus? There's a reason the MCT is 2:30. The shuttles run pretty regularly, but your connection doesn't leave much margin for error.
The other aspect is TK is not the most punctual. More anecdotally, but it seems their flights are regularly ~45min behind schedule. So keep that in mind.