Gradic, D., Perseo, V., Burckhart, A., Kriete, D. M., König, R., Reimold, F., Krychowiak, M., Dux, R., Bernert, M., Brida, D., Lunt, T., Winters, V., Effenberg, F., Pedersen, T. S., W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society, ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society, & EUROfusion MST1 Team (2021). Inter-machine spectroscopic study of SOL flows in ASDEX Upgrade and Wendelstein 7-X. Talk presented at 30th International Toki Conference on Plasma and Fusion Research (ITC 30). Virtual. 2021-11-16 - 2021-11-19.