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Way to reference a channel but at a different time (like ValueAtTime in AE)?

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Is there a way, when doing a channel reference, to point to the referenced channel but at a different time than the current $T, a la After Effects' ValueAtTime expression?

In some situations I understand throwing a time shift to create another stream of the referenced object might work, but that won't work on the setup I have going, where a null parameter has a five-keyframe movement that I want to drive properties of two different objects, one four frames after the first. Because there are so few frames this is an easy one to simply duplicate any time I have to change it, but it seems like there should be a more procedural way.

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in Hscript its cht() or chf()

in VEX any ch*() function has optional time argument

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