According to the IPC code book it should be a minimum of 12 inches.
15 inches from outside edge of tub to center of toilet flange.
It should reflect the cost of plastering PLUS 3-4 hours for removing and re-fitting toilet appliances.
standard height is 36 inches and if there is available wall space you should put it as close to the sink or shower/tub as possible.
The clog is below the point where the toilet and the tub join the drain.
Putting toilet water into the tub with a cup.The real answer isWater seeks its own level and when a soil line (waste) is blocked water will find the lowest point to flow intoThus a toilet is above the tub and a basin is above the toilet.To prove allow water to flow in the basin and it should also flow into the tub
A bathroom would have a toilet-sink-tub and or shower. A half bath has a toilet maybe a sink but no tub or shower.
People go in a tub then the tub empties it into the air.
The tub and toilet connect to the same drain at some point. The main drain was plugged but the connection between the toilet and tub was still open. Water seeks it's own level. When the water came up in the toilet, the tub was lower so some of it went there.
You have to use toilet more
NO way
Toilet bubbles when the tub drains can be caused by a clog in the plumbing system. When water is drained from the tub, it creates a vacuum that can draw air from the toilet, causing bubbles to form. This indicates that there is a blockage in the pipes that needs to be addressed to prevent further issues with the plumbing system.
A mainline stoppage.