Error Extending OpenedPosition with StrategyType

export class OpenedPosition extends Schema.Class<OpenedPosition>("OpenedPosition")({
  id: Schema.String,
  strategyId: Schema.String,
  pair: TradingPair,
  exchange: Schema.String,
  positionType: PositionType,
  baseAmount: Schema.Number,
  leverage: Schema.Number,
  effectiveAmount: Schema.Number,
  quoteAmount: Schema.Number,
  entryPrice: Schema.Number,
  liquidationPrice: Schema.Number,
  openedAt: Schema.DateTimeUtc,
}) {}

export const OpenedPositionEnriched = OpenedPosition.pipe(
    Schema.extend(
        Schema.Union(
            Schema.Struct({
                strategyType: Schema.Literal("ai"),
            }),
            Schema.Struct({
                strategyType: Schema.Literal("simple")
            })
        )
    )
)

export class OpenedPosition extends Schema.Class<OpenedPosition>("OpenedPosition")({
  id: Schema.String,
  strategyId: Schema.String,
  pair: TradingPair,
  exchange: Schema.String,
  positionType: PositionType,
  baseAmount: Schema.Number,
  leverage: Schema.Number,
  effectiveAmount: Schema.Number,
  quoteAmount: Schema.Number,
  entryPrice: Schema.Number,
  liquidationPrice: Schema.Number,
  openedAt: Schema.DateTimeUtc,
}) {}

export const OpenedPositionEnriched = OpenedPosition.pipe(
    Schema.extend(
        Schema.Union(
            Schema.Struct({
                strategyType: Schema.Literal("ai"),
            }),
            Schema.Struct({
                strategyType: Schema.Literal("simple")
            })
        )
    )
)

Error: Unsupported schema or overlapping types
details: cannot extend OpenedPosition with { readonly strategyType: "ai" }

Error: Unsupported schema or overlapping types
details: cannot extend OpenedPosition with { readonly strategyType: "ai" }