[nightpool]

I think maybe we're using different definitions of the term "context-switch". Certainly it's an interruption, but I don't really think that sitting down with another engineer to do a focused code review where they've already written out a PR description and thought hard about the problem is comparable to starting a brand new branch or picking it up after a while away and trying to juggle 2, 3, or 4 in-progress tickets.

[wizofaus]

It requires a mental switch in focus. For me anyway, it's not a big difference if it's between working on implementing feature A then switching to working on implementing feature B, and working on feature A then switching to doing a code review for feature B, but I probably take my code reviewing responsibilities more seriously than most (e.g. I always checkout the branch locally, ensure it builds and runs etc.).