Alternate windspeed doesn't seem to work

[Nickduino]

Here's what I'd like to do: display the forecasts from my local weather forecast (Météo France) and the wind from AccuWeather:

But it doesn't work:

Météo France's code:

type: custom:weather-chart-card
entity: weather.clermont_ferrand
title: Météo France
show_main: true
show_temperature: true
show_current_condition: true
show_attributes: false
icons_size: 35
animated_icons: true
icon_style: style1
autoscroll: false
forecast:
  precipitation_type: rainfall
  show_probability: false
  labels_font_size: "12"
  precip_bar_size: "100"
  style: style2
  show_wind_forecast: true
  condition_icons: true
  round_temp: false
  type: daily
  number_of_forecasts: "7"
  disable_animation: false
locale: fr

AccuWeather's code:

type: custom:weather-chart-card
entity: weather.accuweather_clermont
title: AccuWeather
show_main: true
show_temperature: true
show_current_condition: true
show_attributes: false
icons_size: 35
animated_icons: true
icon_style: style1
autoscroll: false
forecast:
  precipitation_type: rainfall
  show_probability: false
  labels_font_size: "12"
  precip_bar_size: "100"
  style: style2
  show_wind_forecast: true
  condition_icons: true
  round_temp: false
  type: daily
  number_of_forecasts: "7"
  disable_animation: false
locale: fr

The hybrid's code:

type: custom:weather-chart-card
entity: weather.clermont_ferrand
title: Hybrid
show_main: true
show_temperature: true
show_current_condition: true
show_attributes: false
icons_size: 35
animated_icons: true
icon_style: style1
autoscroll: false
forecast:
  precipitation_type: rainfall
  show_probability: false
  labels_font_size: "12"
  precip_bar_size: "100"
  style: style2
  show_wind_forecast: true
  condition_icons: true
  round_temp: false
  type: daily
  number_of_forecasts: "7"
  disable_animation: false
locale: fr
winddir: weather.accuweather_clermont
windspeed: weather.accuweather_clermont

Or did I misunderstood the functionality and it works only for current values rather than forecasts? In that case, how can I achieve the result I want?

Desktop (please complete the following information):

• WEATHER-CHART-CARD VERSION : V2.4.11
• HOME ASSISTANT VERSION AND INSTALLATION TYPE (e.g. 2023.07.3) 2024.10
• OS: Windows 10
• Browser Chrome