I found a one pot recipe on YouTube that has you cook the rice first and then add soaked lentils afterwards to finish cooking. One would think that this would make both mushy, but once you add the lentils they begin to take up all the heat and liquid. As mentioned if you attempt the opposite the lentils will still absorb the liquid even after you add the rice and you end up with undercooked lentils/rice unless you let it go for quite some time.
I found a one pot recipe on YouTube that has you cook the rice first and then add soaked lentils afterwards to finish cooking. One would think that this would make both mushy, but once you add the lentils they begin to take up all the heat and liquid. As mentioned if you attempt the opposite the lentils will still absorb the liquid even after you add the rice and you end up with undercooked lentils/rice unless you let it go for quite some time.