Time between holes is immaterial. The 45-second clock is, in effect, extended by the presence of an opponent, which allows for calculating and/or thinking about the next shot during the opponent's turn. An opponent quitting robs one of time.
Not everyone feels that way .Like myself having played many thousands of solo rounds .
And like I said above , In the Showdowns many players quit before the tee or on any hole . So far in the RUSH . There have been 4 of them . I played solo and felt no time pressure .
Have never used anytime during an opponents shot to calculate my next shot . There is no point in it . You don't know the elevation so you can't pick out a club . It is designed that way . So you don't see the specifics of the opponents shot .
Using the time to chat . Or look away from the game to say something to someone . Run and grab a beer .Etc .
Without an opponent you have less time to do that . But nothing is being robbed from you .
Therefore , normal play is playing consecutive shots . With no distinction if it is a 45 second clock or no clock .
As is also evident in the CLASHES . Where one typically can triple your speed on your shot . And comfortly play your next shot . Easily play 3 shots per minute .
It has been 4 years since I enjoyed those CLASHES . I kinda miss them .