Interlinking PBN sites vs Only Linking to Money Site

Sorry if this is an obvious question, this is my first attempt at PBNs.

Do you normally interlink some sites in a PBN (say groups of 3-5 in a 50 site PBN) to build up link authority?

Or is that too big of a footprint and its less risky to just link all mini-sites to the Money Site?

If you do either, do you also block the Ahrefs, Semrush, Majestic bots for the PBN sites?

Thanks for any input you may have.

quality of the pbn domains should mean you never need to interlink, if you interlink this is the amount of PBN you risk.

dont interlink your PBN insteed you can add wiki links or any other authority links , youtube videos in your articles

If your sites look like a normal sites with good designs and author bios and everything, you can interlink them. If its basic PBN, don't do it.