11.0592MHz / 12 x 30 = 27.648MHz, which is only 0.018MHz away from the sender frequency of 27.630MHz.
There is no need to be that close. let me show some examples
I have seen oscillators "biting" with no correlation in frequency. When osc a and osc b approach a falling (or rising) edge at the same time "biting" can occur. Of course, as this example show, "biting" is much more likely when the frequencies are close. However, the only way is proper PCB layout and a ground plane somethimes even separated between the two circuits.

In one case "biting" was corrected by going to a 4 layer board (yes, before the price of 4 came down, I did try to use 2 layer) for cost considerations the other cure which was to make one frequency a PLL derivative of the other was finally chosen.

I have had another case of "biting" where the noise in a chopper stabilized op-amp went way high because of biting. This was corrected by using T2OUT as the op-amp clock.

The short Kaiwalya, you have not seen it all. I will bet 10 cups of foamy golden liquid to one that you have problems at other frequencies as well, albeit maybe too small to have seen them. This could lead to problems such as the guy with frequency a get clocked a fraction of a second later than the guy with frequency b even if it is a dead heat.

Erik