I have the chapters of my text (report class) ideally divided in two main groups: FIRST PART and SECOND PART. Inside the text, right before the first chapter of each part is displayed, I created an isolated page like this:
\clearpage
\thispagestyle{empty}
\null\vspace{\stretch{1}}
\begin{center}
{\Huge FIRST/SECOND PART}\\
\par\vspace{0.7cm}\noindent
{\Large\textit{First/Second Part Description}}
\end{center}
\vspace{\stretch{2}}\null
I would like to have this division of the text in two parts reflected inside the ToC by having "FIRST/SECOND PART // First/Second Part" Description" appear centered (and maybe bold) right before the first chapter of the first/second part in the ToC, without the page number displayed but maybe with an hyperref to that page (if that's easy, it's not essential).
I have no clue on how to achieve that and any help would be much appreciated!

.tocfile to be added to the contents list.\addcontentslineis usually what is wanted when a page number is also wanted, and\addtocontentswhen no page number is to appear. i'm sure this question has been asked before. this question might help: How to add a line to the Table of Contents without a page number but if it doesn't, there are others. – barbara beeton Apr 12 '17 at 01:06