Assault Battle Pause Button/Suspend Fight

I know,quality of life, big ask! But, can we please get an option to pause an assault battle? Challenge tier 3 inquisitors takes me over an HOUR. I’ve had to quit out on wave 5 a few times because I had to make a phone call etc and this assault battle takes forever!!!!(I had the unfortunate luck of having my healer die on wave 8 hence the 2 stars and lucky me getting to try to grind this again, and it’s a really long fight!!)