Is a code run where it selects only the lines that have bolded text plus one
(above) and delete all others lines that are not qualified. Is this
possible?

Say, there are bold number or text found on rows 5, 8, 12, 22. When the
code runs, it would delete rows

1, 2, 3, 6, 9, 10, 13, 14, 15, 16, 17, 18, 19, and 20.

Can this be done?