The nuance here lies within the “hours” quantifier.

A junior member being blocked for 3-8 hours semi-regularly is expected. Once every other month you probably should be blocked for several work days as well.

In your example, the challenge would have been realizing you wouldn’t have been the first one trying to send an email in the team. Recognizing that and it is very easy to know that you should just ask the question right away. It’s not a technical skill, but something a bit more meta.