3.3.3 How to find \(E\left ( V_{ij}\right ) \) the expected number of visits to j before absorbing?

Here, \(i\in T\) and \(j\in T\)  Then

\[ E\left ( V_{ij}\right ) =\left ( I-Q\right ) _{i,j}^{-1}\]

The above gives the average number of visits to state \(j\) (also transient) before chain is absorbed for first time.

question: Note that if chain is regular, then all states communicates with each others and then \(i\in R,j\in R\) and so \(E\left ( V_{ij}\right ) \) can be found from the stationary distribution \(\pi ^{\infty }\) , right?