Sequilize query is returning only one row while using include in belongsToMany association

Question

Context : I have this problem when I try to fetch a model with the through attribute, in my case the association table can have the composition (foreign key 1, foreign key 2) repeated several times with a different value for a custom association field

Note: I'm using SQlite as an SGBD

Here is the definition of the models / Association

export const Cap = sequelize.define('Cap', {
    // Model attributes are defined here
    ID: {
      type: DataTypes.INTEGER,
      autoIncrement: true,
      primaryKey: true
    },
    name: {
      type: DataTypes.STRING(100),
      unique: true,
      allowNull: false
    }
    }
  }, {
    tableName: 'cap'
});

export const Assessment = sequelize.define('Assessment ', {
    // Model attributes are defined here
    ID: {
      type: DataTypes.INTEGER,
      autoIncrement: true,
      primaryKey: true
    },
    label: {
      type: DataTypes.STRING(50),
      unique: true,
      allowNull: false
    },
  }, {
    tableName: 'assessment '
});

export const CapAssessments = sequelize.define('CapAssessments ', {
  // Model attributes are defined here
  ID: {
    type: DataTypes.INTEGER,
    autoIncrement: true,
    primaryKey: true
  },
  cap: {
    type: DataTypes.INTEGER
  },
  assessment: {
    type: DataTypes.INTEGER
  },
  score: {
    type: DataTypes.INTEGER
  }
}, {
  tableName: 'capAssessments '
});

Cap.belongsToMany(Assessment, { through: 'capAssessments ', as: 'hasKCMapping', foreignKey: 'cap'});

KeepCalmsAssessment.belongsToMany(Capability, { through: 'capAssessments ', as: 'belongsToCap', foreignKey: 'assessment'});

And here is the query that I used for retrieval:

let kcMapping = await Capability.findAll({
        attributes: {
          exclude: ['ID']
        },
        include: [
          { 
            model: KeepCalmsAssessment,
            as: 'hasKCMapping',
            through: {
                attributes: ['score']
            },
            
          }
        ]
    });

The problem is that the query only display one result for the through table, when it should instead print two, here is the result obtained:

{
        "name": "make-flow",
        "hasKCMapping": [
            {
                "ID": 1,
                "label": "culture",
                "capAssessments ": {
                    "cap": 9,
                    "assessment": 1
                }
            }
        ]
    },