Nellandamento
Nell'andamento is an Italian locution formed by the preposition in and the masculine noun andamento, combined through elision to Nell'andamento. The phrase is used to indicate something occurring or developing “in the course” or “throughout the progress” of a process, event, or period. While andamento as a standalone word can refer to tempo in music or the general course of something, nell'andamento functions as a frame of reference for how things unfold over time, rather than signaling tempo.
The expression is common in formal and literary Italian, including journalism, academic writing, and prose analyses.
In English, nell'andamento is most closely rendered as "in the course of" or "in the progression of."