  While forming an ($A$+2) nucleus from a nucleus $A$ via a two-neutron
transfer reaction, the constructive interference of the many possible reaction
channels favors significant pairing enhancement through the continuum of the
intermediate ($A$+1) nucleus [Phys. Lett. B 834, 137413 (2022)]. I analyse this
situation in more detail, from the point of view of a varying pairing field
leading to the formation of ($A$+2) nucleus $^6$He, described as housing
two-neutrons in orbitals of $^5$He. The naturally unbound scenario of the
intermediate $^5$He is compared with two hypothetically bound cases. The
different possible situations manifest that the continuum correlations are
extremely crucial to the extension of the pairing enhancement observed in the
system.
