Position of the NGC 288 (blue filled square) and the two in situ GCs (red filled squares) in the V_φ - [Fe/H] plane. In background we show the distribution of likely in situ stars from Bellazzini et al. (2024). The central red line highlights the median of the V_φ distribution, while the upper and lower lines trace the 16th and 84th percentiles, respectively. The grey vertical lines represent the upper and lower limits of the metallicity distribution function of Splash stars.