For people new to this space, it can be discouraging to make a contribution without knowing when to expect a response. This is particularly true in the context of the guide's existing advice about cold openings:
Contact at most 1 person from each project, and ask them to forward your request if someone else is more appropriate.
If you don't get a timely response, try something with a broader audience like discussion group, IRC, or report a bug/issue.
Of course, different projects and different people will have different responsiveness. Still, it's worth acknowledging that and suggesting an upper bound so that newcomers are more confident about this more passive part of the experience.
For people new to this space, it can be discouraging to make a contribution without knowing when to expect a response. This is particularly true in the context of the guide's existing advice about cold openings:
Of course, different projects and different people will have different responsiveness. Still, it's worth acknowledging that and suggesting an upper bound so that newcomers are more confident about this more passive part of the experience.