This phrase, “Valid question. Invalid timing,” is a common way to express that:

– The question itself is a good one. It’s relevant, thought-provoking, or important.
– However, the moment it was asked is inappropriate or inconvenient. There could be a variety of reasons for this:

* Sensitivity: The question might touch on a delicate topic or a painful memory that’s best avoided at the current time.
* Context: The current situation might not be suitable for discussing the question, such as during a serious meeting, a celebration, or a time of mourning.
* Practicality: There might not be enough time, resources, or attention available to properly address the question right now.
* Priorities: There may be more urgent matters that need to be dealt with first.

Essentially, it’s a polite way of acknowledging the merit of the question while simultaneously postponing or redirecting the conversation. It suggests that the question *should* be answered eventually, but not at this particular moment.