For a dua to be fulfilled, a number of conditions should be fulfilled. Various texts elaborate them - some examples are noted below:
“I respond and accept the du'a of the one who supplicates unto me...” (Qur'an 2:186)
“Make du'a unto Allah with humility and secret...” (Qur'an 3:55)
The Prophet (saw) said, "A man’s du’a may be answered so long as it does not involve sin or severing the ties of kinship or hastening.” It was said: “O Messenger of Allah, what does hastening mean?” He said: “When he says, ‘I made du’a and I made du’a but I did not see any response,’ so he gets discouraged and stops making du’a." (Muslims)
The Prophet (saw) said: "Know that Allah does not answer a du’a from a distracted heart." (Tirmidhi 3479)
Your description of each is not sufficiently detailed so it is difficult to provide a definitive answer - but given both appear to have undertaken the necessary effort of planting the seeds, preparing the bricks, made du'a solely to Allah (assuming the first refers to Allah when he says Lord), it would be expected that both of their du'as would be answered should Allah wish.
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