There is a higher pressure at the output tee at TEV1 than at the output of TEV2 during heating so, to me, regardless of whether the TEV is open on not, the flow will go to the EVAP.

When i was learning fluid flow (and electrical flow) years ago, i would picture myself as a bit of liquid or gas flowing through a pipe and watch as the stream hit different obstacles and tributaries. I don't know if anyone else looked at it that way but it worked for me rather well.