How does particle identity change quantum entanglement during a walk?

Tracking two particles hopping on a 1D lattice, the study compares how spatial and particle-particle entanglement grow depending on whether the particles are distinguishable or indistinguishable bosons. The surprise: the two cases look nearly the same early on, but at long times, stronger on-site repulsion doesn't steadily increase entanglement — it oscillates non-monotonically. This matters because entanglement growth is a key resource for quantum computing, and repulsion is often assumed to simply boost correlations.