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Experiments and analyses disagree on whether the escape takes a finite time or none.","posed_since":"2008","precise":"In elliptically polarized strong-field ionization of atomic hydrogen or helium, extract the tunneling delay $\\tau_T$ from the photoelectron momentum offset angle after subtracting the Coulomb deflection computed from the full time-dependent Schrodinger equation, and decide whether $\\tau_T = 0$ within resolution. A 2019 hydrogen experiment (Sainadh et al., Nature) reported $\\tau_{T}$ below about $1.8 \\times 10^{-18}\\,\\mathrm{s}$.","problem_ref":"4b15bf14f927784843fc0baa015776b80a06c45567c265054af6a8d6344ae509","references":"","settled_by":"Agreement between calibrated attoclock measurements on hydrogen at several intensities and a clock-model prediction.","status_note":"2025 analyses (e.g. arXiv:2503.07859) continue to compare attoclock and Larmor-clock interpretations of strong-field tunneling.","title":"Is there a nonzero tunneling delay in strong-field 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