Sharing Digital Game over 2 PS4s

I know this has been asked several times and I searched it, but all the post were from awhile back and I want to make sure it still works.

So if PlayStation 1 has PlayStation plus and downloads the digital copy of the game and is initially the primary console.

I would then switch to PlayStation 2 and sign in to the PSN account from PlayStation 1 activate it as primary and go to download the game again. (How exactly would I do this if it was through a digital code? Would I just go to the PS store or Library?)

PlayStation 2 would have to stay signed into the original PSN while the game was downloading.

Once finished PlayStation 2 would keep the main account as its primary allowing the second PSN on the second console to play the new game.

I could then sign into PlayStation 1 as the main account and still have ps+ and my game.

Finally, we would both have and be able to play the game. But would we be able to play at the exact same time across both consoles?