Merger times, T_inspiral, and systemic kicks from the second SN, v_sys, for BNSs and NSBH binaries from our population synthesis models. The populations were obtained using three different models for the SN natal kicks, namely the Hobbs model (Hobbs et al. 2005), the Verbunt model (Verbunt et al. 2017), and the Bray model (Bray & Eldridge 2016). Distributions from the Bray model present discrete features because the natal kicks from this prescription are weighted by the compact remnant mass output by BPASS, which in turn reflects the discrete grid of input parameters (e.g. initial masses and orbital periods).