Are there any other “mitzvot” besides counting S’fira that are cumulative? In other words, if you forget a day of S’fira you can no longer count with a bracha. Are there any other types of mitzvot that follow this pattern? For example, if one doesn’t say Kiddush Friday night, you can still say Kiddush on Shabbat morning or the next week. Same for benching. If you don’t wash before a seuda you can still bench and of course not benching once does not preclude you from benching at the next meal.
This question follows the opinion that the entire of sefira is one long mitzvah, not that each day is its own discrete mitzvah. And this is not about a bracha giving me permission to do the next activity or the lack of an activity precluding my making a bracha (if I didn't eat, I don't bentch).