Why do we say, "O Lord," in supplication when Allah says, "And when My servants ask you concerning Me, indeed I am near"?

The point of contention in supplicating with "O Lord" (Ya Rabb) while Allah says, "And when My servants ask you, [O Muhammad], concerning Me - indeed I am near," is unclear. If the intention is that proximity necessitates calling with "A" and "Ay" for someone near, then "Ya" is used for both near and far. Furthermore, rhetorical rules allow for treating someone near as far and vice versa. It is permissible for a Muslim to supplicate with "Ya Rabb," "Rabb," or "Allahumma," as all of these are broad and mentioned in the texts of revelation. This does not contradict the reason for the revelation of the verse, as a Bedouin asked the Prophet (peace and blessings be upon him), "Is our Lord near so we may whisper to Him, or far so we may call out to Him?" Then the verse was revealed, and knowing the reason for revelation helps in understanding its interpretation.